-Added SPR registers 
-Implemented MTSPR
-Partial Implementation of Floating-Point Status and Control Register (FPSCR)
-Fixed MPYU and special registers based on comments
Merge pull request #16 from Magn3s1um/master

Floating-Point Status and Control Register (FPSCR) and code fixes
Merge branch 'master' of https://github.com/DHrpcs3/rpcs3