Import SQLite 3.7.6.3.

third_party/sqlite/src/configure.ac

Index: third_party/sqlite/src/configure.ac
diff --git a/third_party/sqlite/src/configure.ac b/third_party/sqlite/src/configure.ac
index 441cf7808cedb8b126de5fcddebfacb4962d7ef1..464ed1ef11c6566d881d8ce7e55d88b9137ca8fa 100644
--- a/third_party/sqlite/src/configure.ac
+++ b/third_party/sqlite/src/configure.ac
@@ -139,7 +139,7 @@ USE_AMALGAMATION=1
 # if not, then we fall back to plain tclsh.
 # TODO: try other versions before falling back?
 # 
-AC_CHECK_PROGS(TCLSH_CMD, [tclsh8.4 tclsh], none)
+AC_CHECK_PROGS(TCLSH_CMD, [tclsh8.5 tclsh], none)
 if test "$TCLSH_CMD" = "none"; then
   # If we can't find a local tclsh, then building the amalgamation will fail.
   # We act as though --disable-amalgamation has been used.
@@ -269,24 +269,6 @@ fi
 AC_SUBST(XTHREADCONNECT)
 
 ##########
-# Do we want to set threadsOverrideEachOthersLocks variable to be 1 (true) by
-# default. Normally, a test at runtime is performed to determine the
-# appropriate value of this variable. Use this option only if you're sure that
-# threads can safely override each others locks in all runtime situations.
-#
-AC_ARG_ENABLE(threads-override-locks, 
-AC_HELP_STRING([--enable-threads-override-locks],[Threads can override each others locks]),,enable_threads_override_locks=no)
-AC_MSG_CHECKING([whether threads can override each others locks])
-if test "$enable_threads_override_locks" = "no"; then
-  THREADSOVERRIDELOCKS='-1'
-  AC_MSG_RESULT([no])
-else
-  THREADSOVERRIDELOCKS='1'
-  AC_MSG_RESULT([yes])
-fi
-AC_SUBST(THREADSOVERRIDELOCKS)
-
-##########
 # Do we want to support release
 #
 AC_ARG_ENABLE(releasemode,