Subversion: Make sure commit messages are handled as utf8 encoded

Change-Id: Ic53e29111578d5813379843458671d90d586dc58
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Provide %{buildDir} macro expansion again.

This was a regression introduced during the macro expander rework.

Task-number: QTCREATORBUG-13260
Change-Id: I9fd28c6a522faa11992931f937dd0b0eb779f419
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>