Enum and namespace syntax fixes to satisfy -pedantic
Resolved a couple "code never reached" areas to satisfy -Wextra
git-svn-id: svn://localhost/ardour2/trunk@688 d708f5d6-7413-0410-9779-e7cbd77b26cf
Renamed pbd3 back to pbd, since it's version 4.1 now.
Very minor fixes
git-svn-id: svn://localhost/ardour2/trunk@656 d708f5d6-7413-0410-9779-e7cbd77b26cf