[RFA/testsuite] stack check

[Jerome Guitton]

Jerome Guitton (guitton@adacore.com):

> 
> Test that GDB is able to get a correct backtrace when the application
> is compiled with -fstack-check.

BTW, I have a similar testcase in PPC assembly. It checks that the
different stack-checking sequences that GCC may emit for this target
are understood by GDB. It could be merged into
gdb.arch/powerpc-aix-prologue.exp. If it is of any help, I'll be happy
to post it in this list.

Thanks,
- Jerome