mariadb: fails with clang

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Formula/mariadb.rb

@@ -9,6 +9,10 @@ class Mariadb < Formula
 
   depends_on 'readline'
 
+  fails_with :clang do
+    build 318
+  end
+
   def options
     [
       ['--with-tests', "Keep tests when installing."],
@@ -19,12 +23,6 @@ class Mariadb < Formula
   end
 
   def install
-    # FIXME This should be replaced with fails_with_clang once available
-    if ENV.compiler == :clang
-      opoo "Formula will not build with Clang, using LLVM."
-      ENV.llvm
-    end
-
     ENV.append 'CXXFLAGS', '-fno-omit-frame-pointer -felide-constructors'
 
     # Make universal for bindings to universal applications