Fix comments in testsuite script

	* scripts/check_compile: Fix comments.

From-SVN: r263814

libstdc++-v3/ChangeLog

 2018-08-23  Jonathan Wakely  <jwakely@redhat.com>
 
+	* scripts/check_compile: Fix comments.
+
 	* include/debug/string (insert(__const_iterator, _InIter, _InIter)):
 	[!_GLIBCXX_USE_CXX11_ABI]: Replace use of C++11-only cbegin() with
 	begin(), for C++98 compatibility.

libstdc++-v3/scripts/check_compile

 #!/usr/bin/env bash
 
-# Script to do performance testing.
+# Script to do compilation-only testing.
 
 # Invocation 
-# check_performance SRC_DIR BUILD_DIR
+# check_compile SRC_DIR BUILD_DIR
 
 # 1: variables
 #
@@ -17,7 +17,7 @@ shift
 # This has been true all along.  Found out about it the hard way...
 case $BASH_VERSION in
     1*)  
-	echo 'You need bash 2.x to run check_performance.  Exiting.'; 
+	echo 'You need bash 2.x to run check_compile.  Exiting.';
 	exit 1 ;;
     *)   ;;  
 esac