build-system: keep a spec file in the tarball

Refs #49953

Change-Id: I7f618d6d3b50d9e658249425903fca630d2978f6

.gitignore

@@ -16,6 +16,7 @@ Makefile
 *.pod
 .libs
 .deps
+*.spec
 
 autom4te.cache
 config.guess

tools/build-system/build_tarball.sh

@@ -34,6 +34,7 @@ rm -rf $BUILDDIR
 rm -f *.tar.gz
 
 rm -rf lang/
+sed /^Version/s/[0-9].*/$SOFTWARE_VERSION/ tools/build-system/rpm/sflphone.spec > sflphone.spec
 rm -rf tools/
 #rm -rf kde/