win32/include/process.h: update prototypes to match mingw.
win32/include/process.h: update prototypes to match mingw.

This eliminates an argument type mismatch warning during tcc
self-compilation on windows.

rchandramouli/tinycc,alfonsokim/tinycc,mingodad/tinycc,alfonsokim/tinycc,avih/tinycc,seyko2/tinycc,metaeducation/tcc,andrewchambers/tccmirror,seyko2/tinycc,andrewchambers/tccmirror,mingodad/tinycc,code4game/tinycc,andrewchambers/tccmirror,code4game/tinycc,rchandramouli/tinycc,mirror/tinycc,gfwilliams/tinycc,leeduhem/tinycc,rchandramouli/tinycc,mirror/tinycc,metaeducation/tcc,run4flat/tinycc,fstudio/tinycc,avih/tinycc,andrewchambers/tccmirror,leeduhem/tinycc,fstudio/tinycc,avih/tinycc,gfwilliams/tinycc,andreiw/tinycc,rchandramouli/tinycc,andrewchambers/tccmirror,mirror/tinycc,leeduhem/tinycc,fstudio/tinycc,leeduhem/tinycc,avih/tinycc,mirror/tinycc,alfonsokim/tinycc,run4flat/tinycc,gfwilliams/tinycc,run4flat/tinycc,gfwilliams/tinycc,gfwilliams/tinycc,fstudio/tinycc,seyko2/tinycc,seyko2/tinycc,seyko2/tinycc,andreiw/tinycc,fstudio/tinycc,metaeducation/tcc,mingodad/tinycc,run4flat/tinycc,run4flat/tinycc,metaeducation/tcc,alfonsokim/tinycc,andreiw/tinycc,alfonsokim/tinycc,mingodad/tinycc,leeduhem/tinycc,code4game/tinycc,rchandramouli/tinycc,metaeducation/tcc