contrib: integrate RPM spec

Remove OpenSUSE bug report link, set version to @VERSION@, make it build with
CentOS 8 etc.

Related: OS#4550
Change-Id: I3e135e5e7807688366598a24e121550d6292906c

.gitignore

@@ -44,3 +44,5 @@ tests/ipa_recv/ipa_recv_test
 
 # vi/vim files
 *.sw?
+
+contrib/libosmo-abis.spec

configure.ac

@@ -167,4 +167,5 @@ AC_OUTPUT(
 	include/Makefile
 	src/Makefile
 	tests/Makefile
-	Makefile)
+	Makefile
+	contrib/libosmo-abis.spec)

contrib/libosmo-abis.spec.in

@@ -12,14 +12,8 @@
 # license that conforms to the Open Source Definition (Version 1.9)
 # published by the Open Source Initiative.
 
-# Please submit bugfixes or comments via http://bugs.opensuse.org/
-#
-
-
-%define version_unconverted 0.8.0.26
-
 Name:           libosmo-abis
-Version:        0.8.0.26
+Version:        @VERSION@
 Release:        0
 Summary:        Osmocom library for A-bis interface between BTS and BSC
 License:        AGPL-3.0-or-later AND GPL-2.0-or-later
@@ -27,7 +21,6 @@ Group:          Productivity/Telephony/Utilities
 Url:            https://osmocom.org/projects/libosmo-abis/wiki/Libosmo-abis
 
 Source:         %name-%version.tar.xz
-Patch1:         osmo-talloc.diff
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildRequires:  automake >= 1.6
 #BuildRequires:  dahdi-linux-devel
@@ -103,7 +96,6 @@ applications that want to make use of libosmotrau.
 
 %prep
 %setup -q
-%patch -P 1 -p1 -F2
 
 %build
 echo "%version" >.tarball-version