regress: rename instruction mnemonic from 'mov' to 'movabs' for x64_bigint.py....

regress: rename instruction mnemonic from 'mov' to 'movabs' for x64_bigint.py. this makes this testcase pass

suite/regress/x64_bigint.py

@@ -15,7 +15,8 @@ class TestX86(regress.RegressTest):
         # Initialize Keystone engine
         ks = Ks(KS_ARCH_X86, KS_MODE_64)
         # Assemble to get back insn encoding & statement count
-        encoding, count = ks.asm("mov rdi, 0x1122334455")
+        # encoding, count = ks.asm("mov rdi, 0x1122334455")
+        encoding, count = ks.asm("movabs rdi, 0x1122334455")
         # Assert the result
         self.assertEqual(encoding, [ 0x48, 0xBF, 0x55, 0x44, 0x33, 0x22, 0x11, 0x00, 0x00, 0x00 ])