* c-common.c: Include <stdlib.h> and <string.h>/<strings.h>.
        * calls.c (expand_call): Remove unused variables funtree,
        n_regs, and tmpmode.
        * dbxout.c, except.c: Include <string.h>/<strings.h>.
        * explow.c: (plus_constant_for_output_wide) Removed unused
        variable all_constant.
        * c-decl.c, genattr.c, genattrtab.c, getconfig.c, genemit.c
        genextract.c, genflags.c, genopinit.c genoutput.c, genpeep.c,
        genrecog.c, global.c, integrate.c , stupid.c : Include
        <stdlib.h>.
        * genextract.c: (walk_rtx) Remove unused variable link.
        * genrecog.c: (concat) Remove unreferenced static function.
        * prefix.c: Include <string.h>/<strings.h>, <stdlib.h>
        * stmt.c: Include <stdlib.h>.
        (expand_asm_operands): Remove unused variable val1.
        (expand_return): Remove unused variable block.
        (pushcase): Remove unused variables l and n.
        (pushcaserange): Likewise.
        * unroll.c (unroll_loop): Remove unused variable temp.

From-SVN: r17766