Fix project file paths with version-independent solution path
Fix project file paths with version-independent solution path

Project files should use solution file path by default, but this didn't
happen with version-independent solution path, only version-specific
ones.

Fix this simply by taking into account "msvs.solutionfile" property
value too (if it's explicitly set), not just "msvs201N.solutionfile".

vslavik/bakefile,vslavik/bakefile,vslavik/bakefile