added version files and strreplace.cc to xcode projects for pbd and midi++. git-svn-id: svn://localhost/ardour2/trunk@1515 d708f5d6-7413-0410-9779-e7cbd77b26cf
git-svn-id: svn://localhost/ardour2/trunk@1484 d708f5d6-7413-0410-9779-e7cbd77b26cf