PR1623: Collision between OpenJDK 6 & 7 classes when bootstrapping with OpenJDK 6

2013-12-17  Andrew John Hughes  <gnu.andrew@redhat.com>

	* Makefile.am:
	(ICEDTEA_BOOT_PATCHES): Enable new patch when
	not using bootstrap tools.
	* NEWS: Updated.
	* patches/boot/openjdk6-prefer_source.patch:
	Pass -Xprefer:source to just-built javac.  The
	bootstrap version already has it in javac.in.