File dont-drop-Groups.patch of Package rpmdevtools

Index: rpmdevtools-8.9/rpmdev-newspec.in
===================================================================
--- rpmdevtools-8.9.orig/rpmdev-newspec.in
+++ rpmdevtools-8.9/rpmdev-newspec.in
@@ -240,9 +240,16 @@ fi
 if [[ $rpmver -ge 40600 ]] ; then # >= 4.6 (Fedora >= 10)
     # filter BuildRoot and Group tags
     specfilter+="
-    s/^(BuildRoot|Group)[ \\t]*:[^\\n]*\\n//IMg
+    s/^BuildRoot[ \\t]*:[^\\n]*\\n//IMg
 "
 fi
+if [ -n "$appname" ] ; then
+    specfilter+="
+    s/\[spectemplate\]/$appname/
+"
+fi
+# set copyright year
+specfilter+="s/__YEAR__/$(date -u +%Y)/"
 if [[ $rpmver -ge 40800 ]] ; then # >= 4.8 (RHEL >= 6, Fedora >= 13)
     # filter unnecessary basic %clean section, up to next section
     specfilter+="
@@ -293,7 +300,6 @@ cat "$tempspec" | sed -rne "
 $ {
     g
     s/^(Name:[ \\t]*)[^\\n]*/\\1$appname/IMg
-    s|^%changelog\\s*|%changelog\\n* $(LC_ALL=C date --utc +'%a %b %e %Y') $(rpmdev-packager)\\n- |Mg
     $specfilter
     p
 }" > "$specfile"