pt.c (convert_template_argument): Use inform instead of error in three places.

/cp
2014-07-02  Paolo Carlini  <paolo.carlini@oracle.com>

	* pt.c (convert_template_argument): Use inform instead of error in
	three places.

/testsuite
2014-07-02  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/cpp0x/variadic-ex10.C: Adjust for inform instead of error.
	* g++.dg/cpp0x/variadic-ex14.C: Likewise.
	* g++.dg/parse/error11.C: Likewise.
	* g++.old-deja/g++.brendan/template17.C: Likewise.

From-SVN: r212223