Print compiler path during configuration and pass more flags to the linker

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@226576 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/lit.cfg b/test/lit.cfg
index c487cf3..385a433 100644
--- a/test/lit.cfg
+++ b/test/lit.cfg
@@ -57,4 +57,5 @@
 
 configuration = config_module.Configuration(lit_config, config)
 configuration.configure()
+configuration.print_config_info()
 config.test_format = configuration.get_test_format()