Backport SQLite memcmp patch.

third_party/sqlite/README.chromium

 Name: sqlite
 URL: http://sqlite.org/
 Version: 3.7.6.3
 Included In Release: Yes
 Security Critical: Yes
 License: Public domain
 
 Instructions for importing a new release of SQLite from sqlite.org.
 
 Note: our current base version is 3.7.6.3.
@@ skipping 71 matching lines @@
 patch -p0 < ../sqlite/fts2.patch
 patch -p0 < ../sqlite/fts3.patch
 patch -p0 < ../sqlite/fts3_85522.patch
 patch -p0 < ../sqlite/icu-shell.patch
 patch -p0 < ../sqlite/webdb.patch
 patch -p0 < ../sqlite/test.patch
 patch -p0 < ../sqlite/mac_time_machine.patch
 patch -p0 < ../sqlite/system-sqlite.patch
 patch -p0 < ../sqlite/sqlite-3.7.6.3-fix-out-of-scope-memory-reference.patch
 patch -p0 < ../sqlite/misalignment.patch
+patch -p0 < ../sqlite/memcmp.patch
 
 This will only be the case if all changes we make also update the corresponding
 patch files. Therefore please remember to do that whenever you make a change!
 
 Descriptions of the changes we've made can be found at the bottom of this file.
 
 --------------------------------------------
 
 How to run the SQLite tests for the Chromium version of SQLite on Linux.
 
@@ skipping 87 matching lines @@
    determine if the database for which the journal is being created has been
    excluded from being backed up using Apple's Time Machine and if so then also
    exclude the journal. These changes were made in pager.c with includes of
    Apple interfaces being made in sqliteInt.h. In order to eliminate a symbol
    conflict with an Apple library after amalgamation it was also necessary to
    rename fts3_porter.c's 'cType' to 'vOrCType'.
  - fts3_85522.patch allows fts3 to work if PRAGMA is not authorized.
  - src/recover.c file implements a virtual table which can read
    through corruption.
  - Enable the macro 'SQLITE_TEMP_STORE=3' for Android.
+ - memcmp.patch backports ASAN-related fixes from SQLite trunk.