[win32] Util::GetHomePath: workaround for windows overestimate buffer size
[win32] Util::GetHomePath: fix compiler warning
[win32] Put 'XBMC_HOME' to the project for easy build and run
[win32] Util::GetHomePath: expand relative path only when needed (one time at XBMC run)
[win32] Util: add functions for adding/removing '\\?\' path prefix
[win32] Util::GetHomePath: support for really long paths
Merge pull request #3189 from Karlson2k/win32_fix_home

Fix win32 relative home path