Fixes issues where the mutex is destroyed while an unlock is happening

[RipleyTom]

Should fix 4C4T issues(including DeS).

Problem I think is specifically when a mutex unlock awake a thread that then destroy the mutex, when unlock thread runs again the lock_guard destructor fails because mutex->mutex doesn't exist(either crashes or unlock gets stuck).

I think the lock guard might actually be ok because that destroy should succeed on a ps3 so it'll wait until the unlock ends and destroy it.

[Krusher97]

Played DeS for about 30 minutes with no crashes or freezes on my i5 6500.

[psennermann]

Finally DeS works again, thanks!

[Rozzemak]

Still occurs for me. (Win10)
Fixed with Win8 compat & Safe SPU block size.
I think, that any windows compat mode messes up min timer resolution time, thus different behavior.
(Just a guess.)
Log here if somebody wants, with broken/working settings right after havoc physics interaction, to see the difference maybe ?..
Freezes (No win 8 compat & mega SPU block size): (Right after havoc interaction.)
RPCS3.log.gz
Freeze2: (Right after havoc interaction.) Win8 compat, mega SPU cache size
RPCS3.log.gz
No Freeze: (Right after havoc interaction. -> sutters more afterwards) Win8 compat, safe SPU block size
RPCS3.log.gz
PS:(With no win 8 compat, safe SPU block size, game freezes too, just to be complete.)

[Asinin3]

Mega/Giga block sizes are experimental though, that's not surpising. There was some changes made that broke mega/giga in some games awhile back. Which is a different issue all-together.

[Rozzemak]

Yea, but the fact that DeS does not freeze by Havoc interaction in win8 compat. mode is weird.
https://superuser.com/questions/133746/how-does-the-compatibility-mode-in-windows-work
Wanted to educate myself little bit, but unless compat. mode affects timers or winApi as whole, I have no idea how it could fix stuff.