libdistorm64: fix -Werror, use _DecodeType
jit-x86: fix issue #52 %ebp overflows, no num of locals limitations

properly annotate all relative ebp/esp offsets which could overflow
and adjust all relative jumps accordingly.
for call patch the jump offsets with TAG_PREP and TAG_LABEL.
fixed some wrong label docs

all jit tests pass now, just i686 fails the last test/closures/upvals.pn (b=2)