mescc: Tinycc support: compile tcc with TCC_IS_NATIVE.
* mlibc/include/string.h (strcat): Declare.
* mlibc/libc-mes+tcc.c (dlclose, dlopen, mprotect, sigaction,
sigemptyset, strcat, vfprintf): Move from libc-gcc+tcc.c.
* mlibc/libc-gcc+tcc.c: Remove them.
* module/language/c99/compiler.mes (c99-input->full-ast): Define __i386__=1.
(i386:type-alist): Parse `long long int', `unsigned short int',
`unsigned long long int'.
(struct-field): Support void**.
(init-declr->name):
(init-declr->pointer): Support function declaration.
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