binutils/binutils: do not fwd declare struct stat (2.22).

For canadian cross to host i686-mingw32 fwd declaring
struct stat is not possible.
Instead #include <sys/stat.h>

Signed-off-by: Titus von Boxberg <titus@v9g.de>
Message-Id: <417a15d4277913841ddd.1353100974@tschetwerikow.boxberg.lan>
Patchwork-Id: 199733

 CT_LOCAL_TARBALLS_DIR="${HOME}/src"

 CT_SAVE_TARBALLS=y

 CT_LOG_EXTRA=y

 CT_ARCH_BE=y

 CT_ARCH_FLOAT_SW=y

 CT_ARCH_arm=y

 CT_BINUTILS_V_2_19_1a=y

 CT_CC_V_4_3_2=y

 CT_LIBC_none=y

 CT_DEBUG_gdb=y

 CT_GMP_V_4_3_2=y

 CT_MPFR_V_2_4_2=y