number by default for Markdown, reStructuredText and Txt2Tags.
Add utils_get_setting() macro for reading a key from a home or
system keyfile.
Move GeanyFiletypePrivate to filetypesprivate.h.



git-svn-id: https://geany.svn.sourceforge.net/svnroot/geany/trunk@5262 ea778897-0a13-0410-b9d1-a72fbfd435f5