ghostscript: fix parallel build issue

ghostscript fails some time on autobuilder, it seems a parallel build issue.
Add patch to fix it.

Fixes [Yocto #1202]

(From OE-Core rev: 90c0eabcce04e8358ce8df9cd9ed60fdeea68cf5)

Signed-off-by: Kang Kai <kai.kang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/ghostscript/ghostscript/ghostscript-9.02-parallel-make.patch

@@ -0,0 +1,17 @@
+When parallel make it will fail with multi copy, see
+http://bugzilla.pokylinux.org/show_bug.cgi?id=1202
+
+Upstream-Status: Pending
+
+Signed-off-by: Kang Kai <kai.kang@windriver.com>
+--- ghostscript-9.02/base/unixhead.mak.orig	2011-07-27 17:06:17.749456100 +0800
++++ ghostscript-9.02/base/unixhead.mak	2011-07-27 17:06:37.449456100 +0800
+@@ -54,7 +54,7 @@
+ 
+ # Define generic commands.
+ 
+-CP_=cp
++CP_=cp -f
+ RM_=rm -f
+ RMN_=rm -f
+ 

meta/recipes-extended/ghostscript/ghostscript_9.02.bb

@@ -15,7 +15,7 @@ SECTION = "console/utils"
 LICENSE = "GPLv3"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=d151214b3131251dfc9d858593acbd24"
 
-PR = "r3"
+PR = "r4"
 
 DEPENDS = "${PN}-native tiff jpeg fontconfig cups"
 DEPENDS_virtclass-native = ""
@@ -27,6 +27,7 @@ SRC_URI = "${SRC_URI_BASE} \
            file://ghostscript-9.02-genarch.patch \
            file://objarch.h \
            file://soobjarch.h \
+           file://ghostscript-9.02-parallel-make.patch \
            "
 SRC_URI_virtclass-native = "${SRC_URI_BASE}"