V3.7.8 - The French language file is updated in the plugin. The Brazilian Portuguese language file is updated in the plugin. The bug of displaying captha error when adding a new user in the multisite is fixed. The Tagalog language file is added to the plugin.

git-svn-id: https://plugins.svn.wordpress.org/captcha/trunk@761300 b8457f37-d9ea-0310-8a92-e5e31aec5664