fix bug of AlignedMalloc.
memalign is memalign(alignment, size), but not memalign(size, alignment).
add b(void*) and make b(int) relative.
add bcc and beq
support rotated imm for add()
add cmp()
change getRotationImm() to getShifterImm()
add adds()
add bvc()
add vfp regs
add fmsr(), fsitod(), fstd()