Add the experimental ".expert" command to the sqlite3.exe shell.

FossilOrigin-Name: 0821bae7afefed98102c81104b4a477e81816bb1f43353c80865411771e3c5a7

diff --cc ext/expert/expert1.test
Simple merge

diff --cc manifest
index c1dd4fcf09728056f4ff54c9f802599dc10316f3,f9adc5dc9a821abdce6265e4549471e609b7a0ea..df2d29e2424f7b05593b1d2258982fec5684ecac
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Lowercase\slocal\svariable\snames\sin\sthe\sSHA3\sextension\sin\sorder\sto\savoid\ncollisions\swith\smacros\sin\stermios.h.
- D 2017-12-20T23:46:29.934
 -C Experimentally\sadd\sthe\sSQLite\sexpert\sfunctionality\sto\sthe\sshell\stool.
 -D 2017-12-19T17:42:13.030
++C Add\sthe\sexperimental\s".expert"\scommand\sto\sthe\ssqlite3.exe\sshell.
++D 2017-12-21T02:17:02.540
  F Makefile.in ceb40bfcb30ebba8e1202b34c56ff7e13e112f9809e2381d99be32c2726058f5
  F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
  F Makefile.msc 6480671f7c129e61208d69492b3c71ce4310d49fceac83cfb17f1c081e242b69
@@@ -42,7 -42,7 +42,7 @@@ F ext/async/sqlite3async.c 0f3070cc3f5e
  F ext/async/sqlite3async.h f489b080af7e72aec0e1ee6f1d98ab6cf2e4dcef
  F ext/expert/README.md b321c2762bb93c18ea102d5a5f7753a4b8bac646cb392b3b437f633caf2020c3
  F ext/expert/expert.c 4791c5e064aea81b2b829fa95228b22283380ee370ea88a1e580103b75516ebf
- F ext/expert/expert1.test 939265e01b8a40551b1338cc3c38b378d7c99479ececbfc5095b2e757f7b8944
 -F ext/expert/expert1.test 4ffbecb378dc542d6fe030f936e2aff79a42c8cdf9fbcbff07db629fb7857b22
++F ext/expert/expert1.test 0c71a3453ce3a0b4dbe952713aec0ae8d416dd846820dd027b08f305f5278b30
  F ext/expert/sqlite3expert.c 6ed4e84a06d1a29b2cf3009c0266573b88602d098055caa46c467154a64e0959
  F ext/expert/sqlite3expert.h af6354f8ee5c9e025024e63fec3bd640a802afcc3099a44d804752cf0791d811
  F ext/expert/test_expert.c 85f5c743a899063fa48296d21de2f32c26d09a21c8582b2a0bc482e8de183e7a
@@@ -1687,7 -1687,10 +1687,8 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P ad38d2c4f073705c02c7b38675e8ae86fe4a794d54eb796e7ed51a905824d5f5
- R 5daaca0715e80715d469ec030422b144
 -P 4c782c950204c09c1d8f857c39c4cf476539ec4e7eee6fd86419d47cf0f8b9e0
 -R 02a097d24d17c339f9cf394885a43a5e
 -T *branch * expert-in-shell
 -T *sym-expert-in-shell *
 -T -sym-trunk *
 -U dan
 -Z d356e0f9c90762c0d67a4b31b4b9510d
++P 3ec7371161bd617e40328aa015b09acc2b37b0b5d269a87050a0c57163f92801 51068dbaeaef13bb80af8126b8c4f3a454dee63de5127d706db50bf789533e60
++R 4f8ab13364d6bba7088ea515e80d086d
++T +closed 51068dbaeaef13bb80af8126b8c4f3a454dee63de5127d706db50bf789533e60
 +U drh
- Z 1310a0a150441991e0cda5ffa4262cdc
++Z b5148bb6ba613d796ac4de4909e11d71

diff --cc manifest.uuid
index 984372aeb602e2b1dd592660b30866449c20ac15,c7ada37e5adbfe57634f8fb4db672f668f540a7c..c17fb2dc41f3fc5d4d732c84484676e006f2d214
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 3ec7371161bd617e40328aa015b09acc2b37b0b5d269a87050a0c57163f92801
 -51068dbaeaef13bb80af8126b8c4f3a454dee63de5127d706db50bf789533e60
++0821bae7afefed98102c81104b4a477e81816bb1f43353c80865411771e3c5a7