Changes

Fix updater not working on windows with non-portable installs
Fix OSD not showing native path separator when saving and loading a state from a file
Fix statusbar message not being up-to-date in some cases
Fix GLideN64 regression introduced in v0.6.1 (see #268 and gonetz/GLideN64#2839)
Fix cmake not making installed libraries executable
Add 'Project64 Save State' option when saving a state to a file
Revert update to mupen64plus-video-parallel (thank you @Themaister for looking into the regression)

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