Complain for static fct declared w/o file scope
Complain for static fct declared w/o file scope

Error out on static function without file scope and give an explaination
to the user

This is a rewrite of e9406c09a3212ab3f120412a6bbdacb0cdd25deb but
considering problems raised about static local function pointers in
632ee5a54076d417971ae7fa8a0c154441a71499.

mobiphil/tinnycc,xcm/tcc,metaeducation/tcc,yousong/tinycc,alfonsokim/tinycc,soywiz/tinycc,melkior/tinycc,Archs/TinyCC,Wallbraker/DCPU-TCC,FriedBreakfast/tcc,soywiz/tinycc,alfonsokim/tinycc,run4flat/tinycc,code4game/tinycc,Archs/TinyCC,mobiphil/tinnycc,ftdi-paul-jiao/tinyCC,gfwilliams/tinycc,seyko2/tinycc,code4game/tinycc,leeduhem/tinycc,fstudio/tinycc,Saectar/inherpreter,avih/tinycc,leeduhem/tinycc,mobiphil/tinnycc,yousong/tinycc,mingodad/tinycc,Saectar/inherpreter,avih/tinycc,shinh/nacltcc,run4flat/tinycc,leeduhem/tinycc,ftdi-paul-jiao/tinyCC,code4game/tinycc,yousong/tinycc,mitake/tinycc,FriedBreakfast/tcc,rchandramouli/tinycc,FriedBreakfast/tcc,metaeducation/tcc,seyko2/tinycc,Saectar/inherpreter,leeduhem/tinycc,fstudio/tinycc,yousong/tinycc,rchandramouli/tinycc,mitake/tinycc,mirror/tinycc,rchandramouli/tinycc,soywiz/tinycc,mirror/tinycc,metaeducation/tcc,mingodad/tinycc,alfonsokim/tinycc,andreiw/tinycc,mirror/tinycc,seyko2/tinycc,run4flat/tinycc,rchandramouli/tinycc,seyko2/tinycc,melkior/tinycc,ftdi-paul-jiao/tinyCC,andrewchambers/tccmirror,Saectar/inherpreter,acook/tinycc,avih/tinycc,run4flat/tinycc,mitake/tinycc,mobiphil/tinnycc,mingodad/tinycc,alfonsokim/tinycc,Wallbraker/DCPU-TCC,shinh/nacltcc,gfwilliams/tinycc,melkior/tinycc,FriedBreakfast/tcc,xcm/tcc,fstudio/tinycc,rchandramouli/tinycc,ftdi-paul-jiao/tinyCC,avih/tinycc,andreiw/tinycc,andrewchambers/tccmirror,acook/tinycc,shinh/nacltcc,shinh/nacltcc,metaeducation/tcc,fstudio/tinycc,shinh/nacltcc,seyko2/tinycc,metaeducation/tcc,andrewchambers/tccmirror,FriedBreakfast/tcc,Archs/TinyCC,leeduhem/tinycc,gfwilliams/tinycc,alfonsokim/tinycc,mirror/tinycc,Archs/TinyCC,Wallbraker/DCPU-TCC,melkior/tinycc,run4flat/tinycc,acook/tinycc,mingodad/tinycc,gfwilliams/tinycc,melkior/tinycc,mitake/tinycc,fstudio/tinycc,xcm/tcc,gfwilliams/tinycc,acook/tinycc,andrewchambers/tccmirror,andreiw/tinycc,soywiz/tinycc,Archs/TinyCC,andrewchambers/tccmirror,Saectar/inherpreter