More tweaks. I didn't manage to complete a mknative from scratch run, but
this is a step in the right direction.

Grab CRTSTUFF_T_CFLAGS_S.

Gentlement start your mknative runs.

Fix bootstrap-libgcc for gcc 4.5

Fix PPC _SOFT_FLOAT

since omp.h is part of libgomp, put it in the libgomp files not the
libstdc++ files.

add libgomp support. needed by "cc -fopenmp", that koffice 2.3 wants to use.

Add an inline ex script to modify configargs.h for powerpc to auto-enable
-msoft-float.

fix the previous

-I$DESTDIR/usr/include is escaping into the generated files from
the native-gcc run. add some sed commands to remove them.

copy sysroot-suffix.h as well, for sh3.

also pull out LIB2ADD_ST for libgcc.

avoid creating an unused directory.

- call each ${MKNATIVE_CONFIG_TARGET_LIBS} target separately
- comment out maybe-all-target-libgcc
- cope with the special transformation needed for gtyp-input.list

fix previous; they belong in _headers1

also pull tr1_impl_headers parallel_headers and decimal_headers for libstdc++

fix all-tree.def, and add gtyp-input.list

fix the path for libdecnumber.

get libdecnumber info out of GCC.

also need bversion.h

some more updates for GCC 4.5.

output stuff to the right libiberty dir for gcc 4.5.

get this some what working with GCC 4.5. i at least have managed to
get crtstuff and libgcc to build for amd64, and have linked and tested
/bin/sh with all these GCC 4.5 compiled part.

initial port to HAVE_GCC = 45. mknative-gcc parts are from me
and are largely untested, most of the rest is from chuq.

get_libgcc_new: Make previous work for digit only ABI names.

get_libgcc_new: Teach multilib.