* include/c_std/cmath.tcc, include/c_std/std_cassert.h,

	* include/c_std/cmath.tcc, include/c_std/std_cassert.h,
	include/c_std/std_cctype.h, include/c_std/std_cmath.h,
	include/c_std/std_cstddef.h, include/c_std/std_cstdio.h,
	include/c_std/std_cstdlib.h, include/c_std/std_cstring.h,
	include/c_std/std_cwchar.h, include/c_std/std_cwctype.h:
	Remove trailing whitespace.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@74458 138bc75d-0d04-0410-961f-82ee72b054a4