7099017: jdk7u2-dev does not build

Summary: changes to skip demo/DEMOS_LICENSE and sample/SAMPLES_LICENSE when building OPENJDK
Reviewed-by: ohair, billyh

make/common/Release.gmk

@@ -82,11 +82,13 @@ ifdef OPENJDK
   SHARE_JRE_DOC_SRC = $(JDK_TOPDIR)
   # Same files for jdk and jre, no name changes
   IMAGE_DOCLIST_JDK = LICENSE ASSEMBLY_EXCEPTION THIRD_PARTY_README
+  IMAGE_DOCLIST_JDK_DEMOS_AND_SAMPLES =
   IMAGE_DOCLIST_JRE = LICENSE ASSEMBLY_EXCEPTION THIRD_PARTY_README
 else
   # make/closed/common/Defs.gmk for closed location of SHARE_JDK_DOC_SRC
 
   IMAGE_DOCLIST_JDK = COPYRIGHT README.html  LICENSE THIRDPARTYLICENSEREADME.txt
+  IMAGE_DOCLIST_JDK_DEMOS_AND_SAMPLES = demo/DEMOS_LICENSE sample/SAMPLES_LICENSE
   IMAGE_DOCLIST_JRE = COPYRIGHT Welcome.html LICENSE THIRDPARTYLICENSEREADME.txt
   ifeq ($(PLATFORM), windows)
     IMAGE_DOCLIST_JRE += README.txt
@@ -98,7 +100,7 @@ endif
 # Paths to these files we need
 JDK_DOCFILES   = $(IMAGE_DOCLIST_JDK:%=$(JDK_IMAGE_DIR)/%)
 JRE_DOCFILES   = $(IMAGE_DOCLIST_JRE:%=$(JRE_IMAGE_DIR)/%)
-JDK_DEMOS_AND_SAMPLES_DOCFILES = $(JDK_IMAGE_DIR)/demo/DEMOS_LICENSE $(JDK_IMAGE_DIR)/sample/SAMPLES_LICENSE
+JDK_DEMOS_AND_SAMPLES_DOCFILES = $(IMAGE_DOCLIST_JDK_DEMOS_AND_SAMPLES:%=$(JDK_IMAGE_DIR)/%)
 
 # absolute directory names: note, these must exist prior to build
 # time - they are created in the main Makefile.