Refactor the SrcItem object to move fields associated with subqueries out

into a separate object named Subquery.  This reduces the size of the SrcItem
object by about 1/3rd and provides improved performance.

FossilOrigin-Name: 484bcd75bc95491d8540c791c1c4d40d996cb465839564662e14f98739699bf1

diff --cc manifest
index e5de88085aa31ee2a8f63d0e3909e0b50521d5cf,7ee60fbf49e82bb447ec552bc56f2ede89d2c85d..de163306d54e97705774c9cc19ce118c54d64e1a
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C When\sthe\sdatabase\sencoding\sis\sUTF-16LE\sand\sthe\sGLOB\soptimization\sis\sused,\nit\sis\sok\sto\suse\sthe\srange\ssearch\sover\san\sindex,\sbut\sit\sis\snot\sok\sto\ndisable\sthe\sactual\sGLOB\sfunction\scall.
- D 2024-08-20T14:12:16.713
 -C Fix\sa\sname\sresolution\sissue\swith\sCTEs.
 -D 2024-08-20T22:44:40.653
++C Refactor\sthe\sSrcItem\sobject\sto\smove\sfields\sassociated\swith\ssubqueries\sout\ninto\sa\sseparate\sobject\snamed\sSubquery.\s\sThis\sreduces\sthe\ssize\sof\sthe\sSrcItem\nobject\sby\sabout\s1/3rd\sand\sprovides\simproved\sperformance.
++D 2024-08-20T23:11:28.443
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
  F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@@ -710,13 -706,13 +710,13 @@@ F src/build.c c5522b5faf8128227678e1942
  F src/callback.c db3a45e376deff6a16c0058163fe0ae2b73a2945f3f408ca32cf74960b28d490
  F src/complete.c a3634ab1e687055cd002e11b8f43eb75c17da23e
  F src/ctime.c 64e4b1227b4ed123146f0aa2989131d1fbd9b927b11e80c9d58c6a68f9cd5ce3
 -F src/date.c 13dd752847afb32ed70510ad7345a5b9c841f51ad904dba5d010f1fa3a6a324e
 +F src/date.c 89ce1ff20512a7fa5070ba6e7dd5c171148ca7d580955795bf97c79c2456144a
  F src/dbpage.c 80e46e1df623ec40486da7a5086cb723b0275a6e2a7b01d9f9b5da0f04ba2782
  F src/dbstat.c 3b677254d512fcafd4d0b341bf267b38b235ccfddbef24f9154e19360fa22e43
- F src/delete.c cb766727c78e715f9fb7ec8a7d03658ed2a3016343ca687acfcec9083cdca500
- F src/expr.c fe958028b36af640b70b2174354c044f75b8c4a4645c921592122aa2a022083a
+ F src/delete.c 444c4d1eaac40103461e3b6f0881846dd3aafc1cec1dd169d3482fa331667da7
+ F src/expr.c 6d5f2c38fe3ec06a7eac599dac822788b36064124e20112a844e9cd5156cb239
  F src/fault.c 460f3e55994363812d9d60844b2a6de88826e007
- F src/fkey.c 852f93c0ef995e0c2b8983059a2b97151c194cc8259e21f5bc2b7ac508348c2a
+ F src/fkey.c 928ed2517e8732113d2b9821aa37af639688d752f4ea9ac6e0e393d713eeb76f
  F src/func.c 1f61e32e7a357e615b5d2e774bee563761fce4f2fd97ecb0f72c33e62a2ada5f
  F src/global.c 61a419dd9e993b9be0f91de4c4ccf322b053eb829868e089f0321dd669be3b90
  F src/hash.c 9ee4269fb1d6632a6fecfb9479c93a1f29271bddbbaf215dd60420bcb80c7220
@@@ -760,11 -756,11 +760,11 @@@ F src/pcache1.c 49516ad7718a3626f28f710
  F src/pragma.c 52bfbf6dfd668b69b5eb9bd1186e3a67367c8453807150d6e75239229924f684
  F src/pragma.h e690a356c18e98414d2e870ea791c1be1545a714ba623719deb63f7f226d8bb7
  F src/prepare.c d99931f45416652895e502328ca49fe782cfc4e1ebdcda13b3736d991ebf42ce
- F src/printf.c 8b250972305e14b365561be5117ed0fd364e4fd58968776df1ce64c6280b90f9
+ F src/printf.c 6a87534ebfb9e5346011191b1f3a7ebc457f5938c7e4feeea478ecf53f6a41b2
  F src/random.c 606b00941a1d7dd09c381d3279a058d771f406c5213c9932bbd93d5587be4b9c
- F src/resolve.c 0aee8a2e5340ba95a966917305dfaff5147fcad78d0839cd364b16e4746b8bcb
+ F src/resolve.c 9afed5fd7b9111633bdb74a73cdc47324e28e4dc6c27113e3e9aee38fb9422ab
  F src/rowset.c 8432130e6c344b3401a8874c3cb49fefe6873fec593294de077afea2dce5ec97
- F src/select.c 7e907830b01c7fd34968514067aed1eac13e47da4bc1a936ef2020c6b866cc08
 -F src/select.c c1c28650d3ea5dc0670dd658600b963c29a5c31b685941a5df583b02631d04ff
++F src/select.c 44d135bbea93872a7318f048d9d6e566b1c3eaa92d6dabe06e4741aa78d1c1ec
  F src/shell.c.in 94571558b0fb28c37a5cf6dbd6ea27285341023a28a8cb5795cd2768fab67704
  F src/sqlite.h.in 1ad9110150773c38ebababbad11b5cb361bcd3997676dec1c91ac5e0416a7b86
  F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
@@@ -849,12 -845,12 +849,12 @@@ F src/vtab.c 5fb499d20494b7eecaadb75846
  F src/vxworks.h d2988f4e5a61a4dfe82c6524dd3d6e4f2ce3cdb9
  F src/wal.c 887fc4ca3f020ebb2e376f222069570834ac63bf50111ef0cbf3ae417048ed89
  F src/wal.h ba252daaa94f889f4b2c17c027e823d9be47ce39da1d3799886bbd51f0490452
- F src/walker.c 7c7ea0115345851c3da4e04e2e239a29983b61fb5b038b94eede6aba462640e2
- F src/where.c f5be664f3379c9f930696e339ec4ef4c1187af860cca727411156101fae6b677
+ F src/walker.c d5006d6b005e4ea7302ad390957a8d41ed83faa177e412f89bc5600a7462a014
+ F src/where.c b6f79b189fcba459bb80420d3b4102f42a399be36ff29a3deff4ae4888fee46d
  F src/whereInt.h 6444b888ce395cb80511284b8a73b63472d34247fcb1b125ee06a54fa6ae878e
- F src/wherecode.c c9cac0b0b8e809c5e7e79d7796918907fb685ad99be2aaa9737f9787aa47349c
- F src/whereexpr.c 26a5a798b3f676447ae54a27584c43b32abfebb8bbcaf6faffbb7ee1da486f2d
- F src/window.c 1e40ffc509bae21e466f6106382d238e91eb73edd4ba10e66ca4fd7af2b96896
+ F src/wherecode.c 137797b0de9ddf1ff43e5b0edffcc76fb05184ed651fc4f5a0a01a45c0b89d04
 -F src/whereexpr.c 6a72cf607548765a262f216e87373fd675a4646f9cc4278fc519b66cf03dbc13
++F src/whereexpr.c 44f41ae554c7572e1de1485b3169b233ee04d464b2ee5881687ede3bf07cacfa
+ F src/window.c 499d48f315a09242dc68f2fac635ed27dcf6bbb0d9ab9084857898c64489e975
  F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
  F test/affinity2.test ce1aafc86e110685b324e9a763eab4f2a73f737842ec3b687bd965867de90627
  F test/affinity3.test f094773025eddf31135c7ad4cde722b7696f8eb07b97511f98585addf2a510a9
@@@ -2210,8 -2205,8 +2210,8 @@@ F vsixtest/vsixtest.tcl 6195aba1f12a5e1
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P a5797ebdea423afc3d2d3bd8adaf1575d33a01f594c0c315afcb1499f1718e9b
- R 0a328206336eacdda27ba4526bd5a010
 -P c1bbed19f4348ec31c3cb4723eaa8f1554bb58ef4de7feb3a0f39612785f13d5
 -R 1c80ace1a0877505f5ca5ebb5b98295b
++P 3399698376761ab8c422f8ea02bfa2759afb606f08bedbd1cf7eee834229a9aa 4fa8235dd59cd683d6c6c97bfe181a9637be7c054d435323c903b9dbd74aff02
++R 82a6023b6446e680173d0de603e0e98e
  U drh
- Z 4c7bd06b974e78d392c3b37a21911656
 -Z ef82496d97c0311a270f63ff1146b092
++Z cc2792cc7e3d54684569210f9c97c9df
  # Remove this line to create a well-formed Fossil manifest.

diff --cc manifest.uuid
index 7fb9914a05a5f83ecad153d8a58b459ae12b9a4b,53632b34799f05ae31c70a24152457302c652ad6..c96f758867f8f86649f53a5c5dee761bcf74b853
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 3399698376761ab8c422f8ea02bfa2759afb606f08bedbd1cf7eee834229a9aa
 -4fa8235dd59cd683d6c6c97bfe181a9637be7c054d435323c903b9dbd74aff02
++484bcd75bc95491d8540c791c1c4d40d996cb465839564662e14f98739699bf1

diff --cc src/select.c
Simple merge

diff --cc src/whereexpr.c
Simple merge