Make clang -cc1 disable Objective-C exceptions by default, and add a -fobjc-exceptions flag to turn them on.

Update all tests accordingly.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126177 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Coverage/codegen-gnu.m b/test/Coverage/codegen-gnu.m
index 6e7790d..432637c 100644
--- a/test/Coverage/codegen-gnu.m
+++ b/test/Coverage/codegen-gnu.m
@@ -1,3 +1,3 @@
-// RUN: %clang_cc1 -triple i386-unknown-unknown -fgnu-runtime -emit-llvm -o %t %s
+// RUN: %clang_cc1 -triple i386-unknown-unknown -fobjc-exceptions -fgnu-runtime -emit-llvm -o %t %s
 
 #include "objc-language-features.inc"