static.
Move symbols_get_global_keywords() to get_global_typenames() in
highlighting.c.
Add symbols_find_tags_as_string(), symbols_get_tag_list(),
symbols_get_macro_list(), symbols_find_in_workspace() from various
tag-related existing code.


git-svn-id: https://geany.svn.sourceforge.net/svnroot/geany/trunk@976 ea778897-0a13-0410-b9d1-a72fbfd435f5