Backport SQLite memcmp patch.

third_party/sqlite/src/src/os_unix.c

 /*
 ** 2004 May 22
 **
 ** The author disclaims copyright to this source code.  In place of
 ** a legal notice, here is a blessing:
 **
 **    May you do good and not evil.
 **    May you find forgiveness for yourself and forgive others.
 **    May you share freely, never taking more than you give.
 **
@@ skipping 4488 matching lines @@
 #if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE
   assert( zFilename==0 || zFilename[0]=='/' 
     || pVfs->pAppData==(void*)&autolockIoFinder );
 #else
   assert( zFilename==0 || zFilename[0]=='/' );
 #endif
 
   OSTRACE(("OPEN    %-3d %s\n", h, zFilename));
   pNew->h = h;
   pNew->zPath = zFilename;
-  if( memcmp(pVfs->zName,"unix-excl",10)==0 ){
+  if( strcmp(pVfs->zName,"unix-excl")==0 ){
     pNew->ctrlFlags = UNIXFILE_EXCL;
   }else{
     pNew->ctrlFlags = 0;
   }
   if( isReadOnly ){
     pNew->ctrlFlags |= UNIXFILE_RDONLY;
   }
   if( syncDir ){
     pNew->ctrlFlags |= UNIXFILE_DIRSYNC;
   }
@@ skipping 2243 matching lines @@
 **
 ** Some operating systems might need to do some cleanup in this routine,
 ** to release dynamically allocated objects.  But not on unix.
 ** This routine is a no-op for unix.
 */
 int sqlite3_os_end(void){ 
   return SQLITE_OK; 
 }
  
 #endif /* SQLITE_OS_UNIX */