weston: improve parallel make race fixes

The original fix is upstream already so mark as a backport, and update the patch
with another race fix.

(From OE-Core rev: ab9d3c4e2bfb68d3a67a85d5a8e799216103978a)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-graphics/wayland/weston/parallelmake.patch

@@ -1,15 +1,33 @@
-The current approach used by the Makefile ends up installing 
-weston.desktop twice and can give build failures when using 
-parallel make flags. Change to just have one DATA reference.
+Backport two patches from upstream to fix parallel builds
 
-RP
-2015/8/3
-Upstream-Status: Pending
+- mkdir races (2eff22b8e6f6e5255a1915c33dfd91cecf02cbbc)
+- weston.desktop race (315476fa7b1f1c44c1b35116036df54ac5cb9a03)
 
-Index: weston-1.8.0/Makefile.am
-===================================================================
---- weston-1.8.0.orig/Makefile.am
-+++ weston-1.8.0/Makefile.am
+Upstream-Status: Backport
+Signed-off-by: Ross Burton <ross.burton@intel.com>
+
+diff --git a/Makefile.am b/Makefile.am
+index 5819b19..ff13b19 100644
+--- a/Makefile.am
++++ b/Makefile.am
+@@ -20,7 +20,7 @@ weston.ini : $(srcdir)/weston.ini.in
+ 		$< > $@
+ 
+ ivi-shell/weston.ini : $(srcdir)/ivi-shell/weston.ini.in
+-	$(AM_V_GEN)$(SED) \
++	$(AM_V_GEN)$(MKDIR_P) $(dir $@) && $(SED) \
+ 		-e 's|@bindir[@]|$(bindir)|g' \
+ 		-e 's|@abs_top_builddir[@]|$(abs_top_builddir)|g' \
+ 		-e 's|@abs_top_srcdir[@]|$(abs_top_srcdir)|g' \
+@@ -29,7 +29,7 @@ ivi-shell/weston.ini : $(srcdir)/ivi-shell/weston.ini.in
+ 		$< > $@
+ 
+ tests/weston-ivi.ini : $(srcdir)/ivi-shell/weston.ini.in
+-	$(AM_V_GEN)$(SED) \
++	$(AM_V_GEN)$(MKDIR_P) $(dir $@) && $(SED) \
+ 		-e 's|@bindir[@]|$(bindir)|g' \
+ 		-e 's|@abs_top_builddir[@]|$(abs_top_builddir)|g' \
+ 		-e 's|@abs_top_srcdir[@]|$(abs_top_srcdir)|g' \
 @@ -179,8 +179,7 @@ pkgconfigdir = $(libdir)/pkgconfig
  pkgconfig_DATA = src/weston.pc