Add extensions/loop.h and extensions/pluto_unroll.h in osl.h
Add extensions/loop.h and extensions/pluto_unroll.h in osl.h

realincubus/openscop,BobSaget-Mod/osl-saber,periscop/openscop,BobSaget-Mod/osl-saber,UBERTC/osl,UBERTC/osl,ftynse/openscop,realincubus/openscop,periscop/openscop,BobSaget-Mod/osl-saber,Haerezis/openscop,ftynse/openscop,realincubus/openscop,periscop/openscop,UBERTC/osl,ftynse/openscop,Haerezis/openscop,Haerezis/openscop