mkrelease: script to run at release

- updates trurl.1 and version.h accordingly

- update RELEASE-PROCEDURE.md to mention this

Reported-by: gnomon- on github
Fixes #315

RELEASE-PROCEDURE.md

@@ -6,7 +6,7 @@ in the source code repo
 
 - edit `RELEASE-NOTES` to be accurate
 
-- edit `version.h` to contain the correct version
+- run `./mkrelease [version]`
 
 - make sure all relevant changes are committed on the master branch
 

mkrelease

@@ -0,0 +1,41 @@
+##########################################################################
+#                                  _   _ ____  _
+#  Project                     ___| | | |  _ \| |
+#                             / __| | | | |_) | |
+#                            | (__| |_| |  _ <| |___
+#                             \___|\___/|_| \_\_____|
+#
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution. The terms
+# are also available at https://curl.se/docs/copyright.html.
+#
+# You may opt to use, copy, modify, merge, publish, distribute and/or sell
+# copies of the Software, and permit persons to whom the Software is
+# furnished to do so, under the terms of the COPYING file.
+#
+# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+# KIND, either express or implied.
+#
+# SPDX-License-Identifier: curl
+#
+##########################################################################
+
+set -eu
+
+export LC_ALL=C
+export TZ=UTC
+
+version="${1:-}"
+
+if [ -z "$version" ]; then
+  echo "Specify a version number!"
+  exit
+fi
+
+ndate=`git log -n1 HEAD --date=format:'%B %d, %Y' --pretty=format:'%ad'`
+
+sed -ie "s/^\.TH.*/.TH trurl 1 \"$ndate\" \"trurl $version\" \"trurl manual\"/" trurl.1
+
+sed -ie "s/\"[\.0-9]*\"/\"$version\"/" version.h