Add ChangeLog entry missed in last commit:

2016-06-03  Chung-Lin Tang  <cltang@codesourcery.com>

	libgomp/
	* testsuite/libgomp.oacc-fortran/reduction-8.f90: New testcase.
	* testsuite/libgomp.oacc-c-c++-common/reduction-8.c: New testcase.

From-SVN: r237209

libgomp/ChangeLog

+2016-06-03  Chung-Lin Tang  <cltang@codesourcery.com>
+
+	* testsuite/libgomp.oacc-fortran/reduction-8.f90: New testcase.
+	* testsuite/libgomp.oacc-c-c++-common/reduction-8.c: New testcase.
+
 2016-06-01  Cesar Philippidis  <cesar@codesourcery.com>
 
 	PR c/70688