Make check_effective_target_c++ work for libstdc++

	* lib/target-supports.exp (check_effective_target_c): Fix indentation.
	(check_effective_target_c++): Likewise. Also match for libstdc++.

From-SVN: r238916

gcc/testsuite/ChangeLog

+2016-07-31  Jonathan Wakely  <jwakely@redhat.com>
+
+	* lib/target-supports.exp (check_effective_target_c): Fix indentation.
+	(check_effective_target_c++): Likewise. Also match for libstdc++.
+
 2016-07-30  Steven G. Kargl <kargl@gcc.gnu.org>
 
 	PR fortran/41922

gcc/testsuite/lib/target-supports.exp

@@ -7001,9 +7001,9 @@ proc check_effective_target_masm_intel  {} {
 # Return 1 if the language for the compiler under test is C.
 
 proc check_effective_target_c { } {
- global tool
+    global tool
     if [string match $tool "gcc"] {
-   return 1
+	return 1
     }
  return 0
 }
@@ -7011,9 +7011,9 @@ proc check_effective_target_c { } {
 # Return 1 if the language for the compiler under test is C++.
 
 proc check_effective_target_c++ { } {
- global tool
-    if [string match $tool "g++"] {
-   return 1
+    global tool
+    if { [string match $tool "g++"] || [string match $tool "libstdc++"] } {
+	return 1
     }
  return 0
 }