Move -Wdangling-else under -Wparentheses to be backwards compatibile with GCC.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150349 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Basic/DiagnosticGroups.td b/include/clang/Basic/DiagnosticGroups.td
index 4fa1982..8c821c9 100644
--- a/include/clang/Basic/DiagnosticGroups.td
+++ b/include/clang/Basic/DiagnosticGroups.td
@@ -259,7 +259,8 @@
 def Parentheses : DiagGroup<"parentheses",
                             [LogicalOpParentheses,
                              BitwiseOpParentheses,
-                             ParenthesesOnEquality]>;
+                             ParenthesesOnEquality,
+                             DanglingElse]>;
 
 // -Wconversion has its own warnings, but we split a few out for
 // legacy reasons:
@@ -331,7 +332,7 @@
 def ThreadSafety : DiagGroup<"thread-safety">;
 
 // -Wall is -Wmost -Wparentheses -Wdangling-else -Wswitch
-def : DiagGroup<"all", [DanglingElse, Most, Parentheses, Switch]>;
+def : DiagGroup<"all", [Most, Parentheses, Switch]>;
 
 // Aliases.
 def : DiagGroup<"", [Extra]>;                   // -W = -Wextra