Patches to x86 compilation to fix vm tests on emulator.

not-int and not-long were unimplemented previously.

cmp-long would return the wrong value with Long.MIN_VALUE.

rem-double and rem-float now use a c helper. This is because fprem may
not fully compute the result on the first invocation and would need to
be looped to completion.

Change-Id: Idf5f6349a63b19d395a3d89434b5b35c430ae3d3