[PATCH] ARM IAS: allow more depth in contextual diagnostics

[Logan Chien]

================
Comment at: test/MC/ARM/unwind-stack-diagnostics.s:16
@@ +15,3 @@
+	.personality __aeabi_unwind_cpp_pr2
+	.cantunwind
+
----------------
Usually, these won't be personality routine specified by the user.  I would suggest to use __gcc_personality_v0, __gxx_personality_v0 and __gxx_personality_sj0.


http://llvm-reviews.chandlerc.com/D2487