While this is a violation of the C standard in theory, it should not affect anything.
Anyway, removing the double underscores makes the header guard scheme more
consistent with the rest of Geany header files so it's still a good thing.
Add GeanyMenubuttonAction and GeanyEntryAction as GtkAction subclasses to have menu buttons and text entries in the toolbar.
Change the Goto line toolbar item back to a plain text entry again.
git-svn-id: https://geany.svn.sourceforge.net/svnroot/geany/trunk@3328 ea778897-0a13-0410-b9d1-a72fbfd435f5
