scripts/functions: use patch -i instead of IO redirection

This makes the patch name show up on the command line
logged by CT_DoExecLog so it's easier to see
what is going on. The -i for patch is specified
by Posix and supported by GNU patch and busybox patch.

Signed-off-by: Johannes Stezenbach <js@sig21.net>
[yann.morin.1998@free.fr: remove now-useless debug message]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Message-Id: <20121030103620.GB8303@sig21.net>
Patchwork-Id: 195418

CT_LOCAL_TARBALLS_DIR="${HOME}/src"

CT_SAVE_TARBALLS=y

CT_LOG_EXTRA=y

CT_ARCH_64=y

CT_ARCH_x86=y

CT_KERNEL_linux=y

CT_KERNEL_V_2_6_33_20=y

CT_BINUTILS_V_2_20_1a=y

CT_BINUTILS_FOR_TARGET=y

CT_CC_V_4_4_3=y

CT_CC_LANG_FORTRAN=y

CT_CC_LANG_CXX=y

CT_CC_LANG_JAVA=y

CT_LIBC_glibc=y

CT_LIBC_GLIBC_V_2_9=y

CT_DEBUG_dmalloc=y

CT_DEBUG_duma=y

CT_DEBUG_gdb=y

CT_GDB_NATIVE=y

CT_DEBUG_ltrace=y

CT_DEBUG_strace=y

CT_GMP_V_4_3_2=y

CT_MPFR_V_2_4_2=y

CT_PPL_V_0_10_2=y

CT_CLOOG_V_0_15_9=y