Add support for automatic indexes on FROM-clause subqueries that are

implemented via co-routine.

FossilOrigin-Name: 020b8b106fc8f840f6b506e1c9c3bc75676daec3

diff --cc manifest
index 370d67df611092aee96e0739dde2635d0ae92b96,a58d875015ced38207eeb709ad6224e4986c62bd..63d4a620381d3da69eccc0614dd15d6cc10522b4
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Using\s"SELECT\sALL"\sinstead\sof\sjust\s"SELECT"\son\sa\squery\sthat\suses\sa\ssingle\nunflattenable\ssubquery\sor\sview\sin\sits\sFROM\sclause\swill\sforce\sthe\ssubquery\sto\nbe\smanifested\sinto\sa\stemporary\stable\srather\sthan\srun\sincrementally\susing\sa\nco-routine.\s\sThis\sis\sa\sstop-gap\smeans\sof\scontrolling\sthe\sdecision\sto\smanifest\nwhile\swe\stry\sto\swork\sout\sa\sbetter\sto\smake\sthat\sdecision\sautomatically.
- D 2015-05-29T01:35:19.289
 -C Add\ssome\sextra\ssource-code\scomments\sand\sa\stest\scase.
 -D 2015-05-29T14:36:30.811
++C Add\ssupport\sfor\sautomatic\sindexes\son\sFROM-clause\ssubqueries\sthat\sare\nimplemented\svia\sco-routine.
++D 2015-05-29T14:47:18.594
  F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
  F Makefile.in 994bab32a3a69e0c35bd148b65cde49879772964
  F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@@ -1280,7 -1281,7 +1281,8 @@@ F tool/vdbe_profile.tcl 67746953071a9f8
  F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
  F tool/warnings.sh 0abfd78ceb09b7f7c27c688c8e3fe93268a13b32
  F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
- P 7da7dc714bf1fe34b38fc33a923490dfd3e4f070
- R 499acad2035bec51403566408ee68110
 -P 521345add67e9dfd7df1446eb942aa0d84b9e6eb
++P a29e117d7ecec05da949348689dbfb0d3acb1280 6d410442fb532e2cf0ad1859bc9e843651f8ff4d
+ R 12e2c54c40333a10e1b02fb50d487ba7
++T +closed 6d410442fb532e2cf0ad1859bc9e843651f8ff4d
  U drh
- Z 2eaa693f71c1ef80818c82e114933ddd
 -Z 1b48f7e21062a41962258c7fda06b04f
++Z d7928c070549025a5dd811faa36cb8a3

diff --cc manifest.uuid
index b1dcea7c7d69a1df77e1690717d0a43e402f33f9,7ce2b9c4a9502581691913cb187dcfadf698ceb8..c9aadaf28d72fd1d3280f4bcf59bfd60a15c4090
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- a29e117d7ecec05da949348689dbfb0d3acb1280
 -6d410442fb532e2cf0ad1859bc9e843651f8ff4d
++020b8b106fc8f840f6b506e1c9c3bc75676daec3