clang/test/Misc/diag-template-diffing-color.cpp: Introduce the feature 'ansi-escape-sequences'.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160043 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/lit.cfg b/test/lit.cfg
index 738dc38..1fc6059 100644
--- a/test/lit.cfg
+++ b/test/lit.cfg
@@ -222,6 +222,10 @@
 if platform.system() not in ['Windows'] or lit.getBashPath() != '':
     config.available_features.add('shell')
 
+# ANSI escape sequences in non-dump terminal
+if platform.system() not in ['Windows']:
+    config.available_features.add('ansi-escape-sequences')
+
 # Registered Targets
 def get_llc_props(tool):
     set_of_targets = set()