build-libtcc1-by-tcc: use a new tcc to compile a libtcc1.c and alloca.S This will allow to build a libtcc1.a even if a bootstrap compiler don't support a target arch.
build-libtcc1-by-tcc: use a new tcc to compile a libtcc1.c and alloca.S
This will allow to build a libtcc1.a even if a bootstrap compiler
don't support a target arch.

There was alrady this feature but only for OS Darwin.

mingodad/tinycc,andrewchambers/tccmirror,code4game/tinycc,seyko2/tinycc,andreiw/tinycc,code4game/tinycc,seyko2/tinycc,fstudio/tinycc,mirror/tinycc,andrewchambers/tccmirror,mirror/tinycc,andreiw/tinycc,fstudio/tinycc,avih/tinycc,mingodad/tinycc,mirror/tinycc,metaeducation/tcc,fstudio/tinycc,run4flat/tinycc,metaeducation/tcc,seyko2/tinycc,seyko2/tinycc,fstudio/tinycc,metaeducation/tcc,mirror/tinycc,andrewchambers/tccmirror,run4flat/tinycc,avih/tinycc,run4flat/tinycc,metaeducation/tcc,andrewchambers/tccmirror,mingodad/tinycc,andreiw/tinycc,fstudio/tinycc,seyko2/tinycc,code4game/tinycc,run4flat/tinycc,avih/tinycc,run4flat/tinycc,mingodad/tinycc,metaeducation/tcc,avih/tinycc,andrewchambers/tccmirror