PHPC-253: bump mongoc after CDRIVER-611 fix

bjori · bjori · commit 6d1e2b7f595f · 2015-04-21T10:23:55.000-07:00
diff --git a/src/libmongoc b/src/libmongoc
@@ -1 +1 @@
-Subproject commit c71163d20d7419c163adb3ec27eba4e44d7301f8
+Subproject commit 94c4091ab040d21af9c92e224b81cd87fbb70f54
