[dev] Temporarily dump PATH in lit config to diagnose missing GitForWindows tools in CI

Author: weliveindetail

test/lit.cfg

@@ -3162,3 +3162,6 @@ if kIsWindows and visual_studio_version:
 
 lit_config.note("Available features: " + ", ".join(sorted(config.available_features)))
 config.substitutions.append( ('%use_no_opaque_pointers', '-Xcc -Xclang -Xcc -no-opaque-pointers' ) )
+
+print("*********** config.environment['PATH'] ***********")
+print(config.environment['PATH'])