Pull up following revision(s) (requested by martin in ticket #870):
gnu/dist/gcc4/gcc/config/vax/vax.md: revision 1.17
external/gpl3/gcc/dist/gcc/config/vax/vax.c: revision 1.3
gnu/dist/gcc4/gcc/config/vax/vax.c: revision 1.19
external/gpl3/gcc/dist/gcc/config/vax/vax.md: revision 1.4
Fix "ashq" second argument sign extension (the assembler does not treat
-1 as a 64bit value).
Upstream reported as http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56875
Problemm noted by Jonny Billquist (in lint), hint for solution from mouse.