patch-2.6.1: implement new patch recipe with latest upstream

This commit patch recipe based on latest upstream code. This is GPLv3
code based. Hence the earlier patch-2.5.9 recipe is left intact for
GPLv2 needs.

Patches from 2.5.9 patch recipe are rebased to this new recipe except
these exceptions:

unified-reject-files.diff: dropped
  This patch implements this new parameter:
     "  --unified-reject-files  Create unified reject files."
  And upstream has implemented very similar parameter like this:
     "  --reject-format=FORMAT  Create 'context' or 'unified' rejects."
  Hence this patch is dropped for the 2.6.1 recipe.

global-reject-file.diff: rebased
  This patch is rebased to the newer upstream codebase.

install.patch: dropped
  Newer upstream code now includes code form this patch.

debian.patch: dropped
  This huge (10k lines) patch was specific for 2.5.9 version of GPLv2 patch.

Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>

meta/recipes-devtools/patch/patch_2.6.1.bb

@@ -0,0 +1,14 @@
+require patch.inc
+LICENSE = "GPLv3"
+
+PR = "r0"
+
+SRC_URI += " file://global-reject-file.diff;patch=1 "
+
+SRC_URI[md5sum] = "d758eb96d3f75047efc004a720d33daf"
+SRC_URI[sha256sum] = "ecb5c6469d732bcf01d6ec1afe9e64f1668caba5bfdb103c28d7f537ba3cdb8a"
+
+LIC_FILES_CHKSUM = "file://COPYING;md5=d32239bcb673463ab874e80d47fae504"
+
+acpaths = "-I ${S}/gl/m4 -I ${S}/m4 "
+