The following small changes (apart from those in ChangeLog.*) have been made
to PGCC/EMX relatively to GCC/EMX 2.7.2.1:

o The -ZC++-comments switch is gone now (hopefully forever) since GCC
  always enable C++-style comments (unless -traditional or -lang-c89 is
  specified)

o The -Zexe switch now works correctly (before it worked only in couple
  with -o switch). ld and emxomfld were patched too for this.

o All compilers were compiled with -Zcrtdll, so you will need an
  installed EMX runtime to run them. Anyway, I think everybody already
  has it :-)

o The -mprobe switch is retained for backward compatibility, however it
  is highly recommended that you use -mstack-arg-probe and -mno-stack-arg-probe
  instead since these options are new from mainstream GCC version, and maybe
  someday -mprobe will disappear.

o emxomf now traps (sometimes?) when compiling with -g (debug) switch.

o Now alloca() is stack-probe safe, i.e. if you`re compiling with
  -mstack-arg-probe switch, alloca() will do stack probes.

o The new C runtime DLLs are completely compatible with old ones (at least
  they should be :-), but includes a new entry for _alloca().
