[PSEH_TEST]
- Fix incorrect size in memcmp. Spotted by clang

git-svn-id: svn://svn.reactos.org/reactos/trunk@64123 97493ccd-5924-5043-b1f5-66cb403b36ce
[PSEH3]
- Add missing C_ASSERTs

git-svn-id: svn://svn.reactos.org/reactos/trunk@64124 97493ccd-5924-5043-b1f5-66cb403b36ce
[KDGDB]
 - Add a callback mechanism permitting to "simulate" KD send <-> receive loop without having to actually communicate to GDB
 - Use that to update the program counter when cont'ing a breakpoint
Now cont'ing an assertion failure is possible, since we actually get beyond the int 3 instruction

git-svn-id: svn://svn.reactos.org/reactos/trunk@64127 97493ccd-5924-5043-b1f5-66cb403b36ce