Add aarch to call ABI compatibility.
MIR compiles `c2m` sources again and generate another binary
MIR, and the two binary MIR files are identical
* The bootstrap test takes about CPU 10 sec (for comparison GCC minimal bootstrap takes about 2 CPU hours)
- * Full x86-64 call ABI (multiple return regs, passing structures through regs) is not implemented yet
+ * Full call ABI (multiple return regs, passing structures through regs) has implemented for aarch64
