javascript: add new plugin to run javascript scripts in WeeChat

This plugin was originally written by Koka El Kiwi
(repository: https://github.com/KokaKiwi/weechat-js-plugin).

This plugin uses Google V8 engine to execute JS scripts.

src/plugins/javascript/CMakeLists.txt

@@ -0,0 +1,33 @@
+#
+# Copyright (C) 2015 Sébastien Helleu <flashcode@flashtux.org>
+#
+# This file is part of WeeChat, the extensible chat client.
+#
+# WeeChat is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# WeeChat is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with WeeChat.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+enable_language(CXX)
+
+add_library(javascript MODULE weechat-js.cpp weechat-js.h
+weechat-js-v8.cpp weechat-js-v8.h
+weechat-js-api.cpp weechat-js-api.h)
+
+set_target_properties(javascript PROPERTIES PREFIX "")
+
+if(V8_FOUND)
+  include_directories(${V8_INCLUDE_DIR})
+  target_link_libraries(javascript ${V8_LIBRARY} weechat_plugins_scripts)
+endif()
+
+install(TARGETS javascript LIBRARY DESTINATION ${LIBDIR}/plugins)