Add the checkindex.c extension and the sqlite3_checker utility program used

for doing live validation of large databases.

FossilOrigin-Name: 0c5d18a01ec77f784d5434c5465ab8da9a0c365a58d4bd8551872ca90aaf42d6

diff --cc manifest
index 649893539ef77efeb4627889b7390ea54a38f285,4d5258d691fead5dbd352b4ae70b6709a1c55f22..86482e8b0c8cf6edd592031a98c021b6f6216d45
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,8 -1,8 +1,8 @@@
- C Update\sthe\sbuilt\sprocedures\sfor\sthe\ssqlite3_analyzer\sutility\sto\sallow\sit\nto\sbe\slinked\swith\san\sexternal\ssqlite3.o\slibrary.\s\sAutomatically\sdetect\sa\nmissing\sdbstat\sextension\sand\sreport\sthe\scompile-time\serror.
- D 2017-10-31T14:56:44.588
- F Makefile.in 5bae3f2f3d42f2ad52b141562d74872c97ac0fca6c54953c91bb150a0e6427a8
 -C Adjust\spage\snumbers\sin\sthe\sext/repair/test/checkfreelist01.test\smodule\sdue\sto\nthe\sfact\sthat\sthe\spending-byte\spage\sis\sno\slonger\sshifted\sdown\sto\sa\slow-numbered\npage\sbut\sis\sin\sits\srightful\splace.
 -D 2017-11-01T19:22:08.991
++C Add\sthe\scheckindex.c\sextension\sand\sthe\ssqlite3_checker\sutility\sprogram\sused\nfor\sdoing\slive\svalidation\sof\slarge\sdatabases.
++D 2017-11-01T19:44:19.216
+ F Makefile.in b142eb20482922153ebc77b261cdfd0a560ed05a81e9f6d9a2b0e8192922a1d2
  F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
- F Makefile.msc 3a5cb477ec3ce5274663b693164e349db63348667cd45bad78cc13d580b691e2
+ F Makefile.msc a55372a22454e742ba7c8f6edf05b83213ec01125166ad7dcee0567e2f7fc81b
  F README.md f5c87359573c4d255425e588a56554b50fdcc2afba4e017a2e02a43701456afd
  F VERSION 0c10cdfed866fdd2d80434f64f042c3330f1daaed12e54287beb104f04b3faaf
  F aclocal.m4 a5c22d164aff7ed549d53a90fa56d56955281f50
@@@ -1667,7 -1673,7 +1673,8 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P bf09fa683ea42b7552bd2f29ab5371bd175f0055cf9a453e6f8c6f4408cd168f
- R 405d6881e4ae5254162d311375149a09
 -P 0593a2ba74c886afe8a65cea1310025bb9777c320d093278044719210c9f6ba2
++P bb39744f4b2b25c10d293e85db7579e2a99c639fdab45e93d1de75952b68b2de c1641affae31a4350727ce940c92499263880e672dc2c3f47e78e1c23ae99b78
+ R e97da7e6f34a0c98621feff75b5fc1d7
++T +closed c1641affae31a4350727ce940c92499263880e672dc2c3f47e78e1c23ae99b78
  U drh
- Z b66d68a4e4b6a1ef52955c34a93fec95
 -Z 33cbf67c611e121ff7dcf902c08c95ea
++Z 29d052b9d1f9214dbd3b25e5b7544e56

diff --cc manifest.uuid
index 45e7b5b385c647f291364e871362861a5d09884a,6eea8937850c107bbff07d5992abcfbfd846fe84..b0b6dde090341e49cf6a5f261b6e0822983d6945
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- bb39744f4b2b25c10d293e85db7579e2a99c639fdab45e93d1de75952b68b2de
 -c1641affae31a4350727ce940c92499263880e672dc2c3f47e78e1c23ae99b78
++0c5d18a01ec77f784d5434c5465ab8da9a0c365a58d4bd8551872ca90aaf42d6