configure: prefer g-variants

For awk and make, we currently check the standard names as found on
a classic GNU-userland system, and then fallback to looking for the
g-named variants as found on a *BSD system.

But it happens that the usual name might also be available on a *BSD
system, so we should first check the g-variant.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

 CT_LOCAL_TARBALLS_DIR="${HOME}/src"

 CT_SAVE_TARBALLS=y

 CT_LOG_EXTRA=y

 CT_ARCH_blackfin=y

 CT_KERNEL_linux=y

 CT_KERNEL_V_2_6_33=y

 CT_ARCH_BINFMT_FDPIC=y

 CT_BINUTILS_V_2_20_1a=y

 CT_CC_V_4_3_4=y

 CT_LIBC_UCLIBC_V_0_9_30_2=y

 CT_LIBC_UCLIBC_CONFIG_FILE="${CT_LIB_DIR}/samples/${CT_TARGET}/${CT_LIBC}-${CT_LIBC_VERSION}.config"

 CT_GMP_V_4_3_2=y

 CT_MPFR_V_2_4_2=y