[Gm2] latest git changes

[Gaius Mulley]

Hi,

here are the latest changes to the git repro:

* gm2/gm2-gcc/m2except.c:  (do_call3) corrected number of parameters.
  (build_exc_ptr) add assertion.  (gm2_build_throw) add location.
* gm2/tools-src/createUlmSys:  improved error message.
* libgm2/Makefile.in:  build and install the Ulm libraries.
  Included $(GM2_OBJ)/gm2-libs/gm2-libs-target.h as a dependant
  to $(GM2_OBJ)/ulm-lib-gm2/sys/SYSTEM.c.

on debian wheezy the regression tests now stand at:

               === gm2 Summary ===

# of expected passes            9512
# of unexpected failures        18


a few fixes have been applied to the regression suite - compiler
paths, linker paths particularly on the 'run' tests.

In essence - if you are building from a tarball on debian the
strong advice would be to use the gcc473 tarball which will very
shortly become the latest stable version.  The caveat would be
to say that optimisation is not as stable as the gcc412 tarball
(as make gm2.paranoid still fails).

The failures above are now because the compiler does not implement
structures at an address and does not detect integer arithmetic overflow.
All other regression tests pass

regards,
Gaius