ncurses_6: Fix an install race condition

Both targets install.libs and install.includes install the same
files, resulting in a race condition when running parallel make.
This race is addressed in a patch file, making sure only one
of the targets (install.includes) installes the include files.
This will work properly (i.e.ncurses will install as intended
by the recipe) as long as we always install both targets.

(From OE-Core rev: a3df0aa78af1c2fecf847e87cc480fd2ed9afe89)

Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/ncurses/files/fix-include-files-race.patch

@@ -0,0 +1,32 @@
+There is a race condition when running 
+
+    $ make install.libs install.includes
+    
+As both targets install identical files. The remedy is to either prevent
+parallel make of install.libs and install.includes, or ensure only one 
+target installs the files. 
+The second approch will only work if we always install both libs and 
+includes (which we do).
+
+
+Upstream-Status: Inappropriate [configuration]
+
+Index: git/mk-hdr.awk
+===================================================================
+--- a/mk-hdr.awk
++++ b/mk-hdr.awk
+@@ -73,11 +73,13 @@ BEGIN	{
+ END	{
+ 		if ( count > 0 )
+ 		{
++			print" # patched here: Removed install.libs due the race "
+ 			print "${INCLUDEDIR} :"
+ 			print "	mkdir -p $@"
+ 			print ""
++			print "install.libs :: ;"
++			print ""
+ 			print "install \\"
+-			print "install.libs \\"
+ 			print "install.includes :: ${AUTO_SRC} ${INCLUDEDIR} \\"
+ 
+ 			for (i = 0; i < count - 1; ++i) {

meta/recipes-core/ncurses/ncurses_6.0+20160213.bb

@@ -2,6 +2,7 @@ require ncurses.inc
 
 SRC_URI += "file://tic-hang.patch \
             file://config.cache \
+            file://fix-include-files-race.patch \
 "
 # commit id corresponds to the revision in package version
 SRCREV = "a25949ff653ac5ae7a204381a3ebfd800feeaa01"