[sql] Import reference version of SQLite 3.8.7.4.

third_party/sqlite/sqlite-src-3080704/src/mutex_unix.c

Index: third_party/sqlite/sqlite-src-3080704/src/mutex_unix.c
diff --git a/third_party/sqlite/src/src/mutex_unix.c b/third_party/sqlite/sqlite-src-3080704/src/mutex_unix.c
similarity index 97%
copy from third_party/sqlite/src/src/mutex_unix.c
copy to third_party/sqlite/sqlite-src-3080704/src/mutex_unix.c
index aa9a8cf2650beb5d810e9a41d4bf5826ff26bbb6..c8663144e8c55091487fb40d94f370166857c01f 100644
--- a/third_party/sqlite/src/src/mutex_unix.c
+++ b/third_party/sqlite/sqlite-src-3080704/src/mutex_unix.c
@@ -96,10 +96,13 @@ static int pthreadMutexEnd(void){ return SQLITE_OK; }
 ** <li>  SQLITE_MUTEX_RECURSIVE
 ** <li>  SQLITE_MUTEX_STATIC_MASTER
 ** <li>  SQLITE_MUTEX_STATIC_MEM
-** <li>  SQLITE_MUTEX_STATIC_MEM2
+** <li>  SQLITE_MUTEX_STATIC_OPEN
 ** <li>  SQLITE_MUTEX_STATIC_PRNG
 ** <li>  SQLITE_MUTEX_STATIC_LRU
 ** <li>  SQLITE_MUTEX_STATIC_PMEM
+** <li>  SQLITE_MUTEX_STATIC_APP1
+** <li>  SQLITE_MUTEX_STATIC_APP2
+** <li>  SQLITE_MUTEX_STATIC_APP3
 ** </ul>
 **
 ** The first two constants cause sqlite3_mutex_alloc() to create
@@ -133,6 +136,9 @@ static sqlite3_mutex *pthreadMutexAlloc(int iType){
     SQLITE3_MUTEX_INITIALIZER,
     SQLITE3_MUTEX_INITIALIZER,
     SQLITE3_MUTEX_INITIALIZER,
+    SQLITE3_MUTEX_INITIALIZER,
+    SQLITE3_MUTEX_INITIALIZER,
+    SQLITE3_MUTEX_INITIALIZER,
     SQLITE3_MUTEX_INITIALIZER
   };
   sqlite3_mutex *p;
@@ -348,4 +354,4 @@ sqlite3_mutex_methods const *sqlite3DefaultMutex(void){
   return &sMutex;
 }
 
-#endif /* SQLITE_MUTEX_PTHREAD */
+#endif /* SQLITE_MUTEX_PTHREADS */