Fix watcher extension (#9663)

Summary:
Change the extension name so that it's unique, add missing sources to the CMake manifest and update the count of expected extensions.

Pull Request resolved: #9663

Reviewed By: paulbiss

Differential Revision: D86868056

fbshipit-source-id: 66d6273be5d0f363ed8f257a3efbc33dec3700ff

Author: mszabo-wikia

hphp/runtime/ext/watcher/config.cmake

@@ -1,6 +1,8 @@
-HHVM_DEFINE_EXTENSION("watchman" IMPLICIT
+HHVM_DEFINE_EXTENSION("watcher" IMPLICIT
   SOURCES
     ext_watcher.cpp
+    watcher-clock.cpp
+    watcher-options.cpp
   SYSTEMLIB
     ext_watcher.php
   DEPENDS

hphp/util/hphp-config.h.in

@@ -88,7 +88,7 @@ ${HHVM_COMPILES_DEFINE_STRING}
 #endif
 
 #ifdef USE_CMAKE
-# if ${HHVM_EXTENSION_COUNT} != 99
+# if ${HHVM_EXTENSION_COUNT} != 100
 #  error You need to update the config file for the new builtin extension, and add the define to the FB section
 # endif
 ${HHVM_EXTENSIONS_ENABLED_DEFINE_STRING}