recipes: Move out stale GPLv2 versions to a seperate layer

These are recipes where the upstream has moved to GPLv3 and these old
versions are the last ones under the GPLv2 license.

There are several reasons for making this move. There is a different
quality of service with these recipes in that they don't get security
fixes and upstream no longer care about them, in fact they're actively
hostile against people using old versions. The recipes tend to need a
different kind of maintenance to work with changes in the wider ecosystem
and there needs to be isolation between changes made in the v3 versions
and those in the v2 versions.

There are probably better ways to handle a "non-GPLv3" system but right
now having these in OE-Core makes them look like a first class citizen
when I believe they have potential for a variety of undesireable issues.

Moving them into a separate layer makes their different needs clearer, it
also makes it clear how many of these there are. Some are probably not
needed (e.g. mc), I also wonder whether some are useful (e.g. gmp)
since most things that use them are GPLv3 only already. Someone could
now more clearly see how to streamline the list of recipes here.

I'm proposing we mmove to this separate layer for 2.3 with its future
maintinership and testing to be determined in 2.4 and beyond.

(From OE-Core rev: 19b7e950346fb1dde6505c45236eba6cd9b33b4b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/diffutils/diffutils-2.8.1/diffutils_fix_for_automake-1.12.patch

@@ -1,27 +0,0 @@
-Upstream-Status: Pending
-
-automake 1.12 has depricated automatic de-ANSI-fication support
-
-this patch avoids these kinds of errors:
-
-| configure.ac:90: error: automatic de-ANSI-fication support has been removed
-| /srv/home/nitin/builds/build-gcc47/tmp/sysroots/x86_64-linux/usr/share/aclocal-1.12/protos.m4:12: AM_C_PROTOTYPES is expanded from...
-| /srv/home/nitin/builds/build-gcc47/tmp/work/i586-poky-linux/diffutils-2.8.1-r4/diffutils-2.8.1/m4/prereq.m4:110: jm_PREREQ_QUOTEARG is expanded from...
-| configure.ac:90: the top level
-| autom4te: m4 failed with exit status: 1
-
-Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
-2012/05/04
-
-Index: diffutils-2.8.1/m4/prereq.m4
-===================================================================
---- diffutils-2.8.1.orig/m4/prereq.m4
-+++ diffutils-2.8.1/m4/prereq.m4
-@@ -115,7 +115,6 @@ AC_DEFUN([jm_PREREQ_QUOTEARG],
-   AC_HEADER_STDC
-   AC_C_BACKSLASH_A
-   AC_MBSTATE_T
--  AM_C_PROTOTYPES
- ])
- 
- AC_DEFUN([jm_PREREQ_REGEX],

meta/recipes-extended/diffutils/diffutils-2.8.1/fix_gcc6.patch

@@ -1,31 +0,0 @@
-Fixes to allow diffutils to build with gcc v6.
-
-RP
-2016/5/25
-
-Index: diffutils-2.8.1/lib/posix/regex.h
-===================================================================
---- diffutils-2.8.1.orig/lib/posix/regex.h
-+++ diffutils-2.8.1/lib/posix/regex.h
-@@ -529,7 +529,9 @@ extern int re_exec _RE_ARGS ((const char
- /* For now unconditionally define __restrict_arr to expand to nothing.
-    Ideally we would have a test for the compiler which allows defining
-    it to restrict.  */
-+#ifndef __restrict_arr
- #define __restrict_arr
-+#endif
- 
- /* POSIX compatibility.  */
- extern int regcomp _RE_ARGS ((regex_t *__restrict __preg,
-Index: diffutils-2.8.1/src/diff.c
-===================================================================
---- diffutils-2.8.1.orig/src/diff.c
-+++ diffutils-2.8.1/src/diff.c
-@@ -71,6 +71,7 @@ static void usage (void);
- static bool recursive;
- 
- /* In context diffs, show previous lines that match these regexps.  */
-+struct re_pattern_buffer function_regexp;
- static struct regexp_list function_regexp_list;
- 
- /* Ignore changes affecting only lines that match these regexps.  */

meta/recipes-extended/diffutils/diffutils_2.8.1.bb

@@ -1,17 +0,0 @@
-LICENSE = "GPLv2+"
-LIC_FILES_CHKSUM = "file://COPYING;md5=94d55d512a9ba36caa9b7df079bae19f"
-
-require diffutils.inc
-
-PR = "r7.0"
-
-SRC_URI = "${GNU_MIRROR}/diffutils/diffutils-${PV}.tar.gz \
-           file://diffutils_fix_for_automake-1.12.patch \
-           file://fix_gcc6.patch"
-
-SRC_URI[md5sum] = "71f9c5ae19b60608f6c7f162da86a428"
-SRC_URI[sha256sum] = "c5001748b069224dd98bf1bb9ee877321c7de8b332c8aad5af3e2a7372d23f5a"
-
-do_configure_prepend () {
-	chmod u+w ${S}/po/Makefile.in.in
-}