Bump mono and llvm to get fix for #55553 (#2059)

LLVM causes Assertion failed: ((instructionAddress & 0x3) == 0), function makeLDR_literal https://bugzilla.xamarin.com/show_bug.cgi?id=55553
2017-05-04 01:22:23 -04:00 · 2017-05-04 01:22:23 -04:00 · 50856ed374
--- a/external/llvm
+++ b/external/llvm
@ -1 +1 @@
-Subproject commit 5b94bc7097eecf70900e20967223b0b5f511187a
+Subproject commit 975e3a6903003d7dba1b01f8a3c4a42a55049842
--- a/external/mono
+++ b/external/mono
@ -1 +1 @@
-Subproject commit 6f6232707c242b787941afef966f83cd77c16ded
+Subproject commit 1d0445bfc7d1d6e9eee7197bc29d4bcd7a60a1d5