Try to unbreak the build on hosts that don't transitively pull in a definition for int64_t.

Also use the portable (ugly) format string macros, for MSVC compatibility.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169396 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCInstPrinter.cpp b/lib/MC/MCInstPrinter.cpp
index 7efb3f0..73f30ff 100644
--- a/lib/MC/MCInstPrinter.cpp
+++ b/lib/MC/MCInstPrinter.cpp
@@ -55,7 +55,7 @@
 /// Utility function to print immediates in decimal or hex.
 format_object1<int64_t> MCInstPrinter::formatImm(const int64_t Value) const {
   if (getPrintImmHex())
-    return format("0x%llx", Value);
+    return format("0x%" PRIx64, Value);
   else
-    return format("%lld", Value);
+    return format("%" PRId64, Value);
 }