* 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.

From-SVN: r74458