Removed option "-parse-ast-check" from clang driver.  This is now implemented
using "-parse-ast -verify".

Updated all test cases (using a sed script) that invoked -parse-ast-check to
now use -parse-ast -verify.

Fixed a bug where using "-verify" instead of "-parse-ast-check" would not
correctly create the DiagClient needed to accumulate diagnostics.

llvm-svn: 42365
diff --git a/clang/test/Sema/enum.c b/clang/test/Sema/enum.c
index 1ba3977..1787c4b 100644
--- a/clang/test/Sema/enum.c
+++ b/clang/test/Sema/enum.c
@@ -1,4 +1,4 @@
-// RUN: clang %s -parse-ast-check -pedantic
+// RUN: clang %s -parse-ast -verify -pedantic
 
 enum e {A, 
         B = 42LL << 32,        // expected-warning {{ISO C restricts enumerator values to range of 'int'}}