Releasing Quick Cache v141127 (Release Candidate)
Move `find_wp_config_file()` to share class.

See websharks/quick-cache#373
Use a site-specific unique IPC Key or Mutex during cache lock

See websharks/quick-cache#373
Remove `apply_filters()` from `find_wp_config_file()` return value

See websharks/quick-cache#373
Update default language files in preparation for v141204 release
Releasing Quick Cache v141204
Merge branch 'release/141127'
Merge tag '141127' into 000000-dev

Tagging 141127