[gimp] Update release-howto.txt with changes done in the gimp-2-8 branch

[Michael Schumacher <schumaml src gnome org>]

commit 34d3ed468c7d42609f9bffc34d973bacc3776b19
Author: Michael Schumacher <schumaml gmx de>
Date:   Tue May 30 23:20:27 2017 +0200

    Update release-howto.txt with changes done in the gimp-2-8 branch

 devel-docs/release-howto.txt |   17 +++++++++--------
 1 files changed, 9 insertions(+), 8 deletions(-)
---
diff --git a/devel-docs/release-howto.txt b/devel-docs/release-howto.txt
index f1e23ac..22b2e9e 100644
--- a/devel-docs/release-howto.txt
+++ b/devel-docs/release-howto.txt
@@ -4,7 +4,7 @@
                   a check-list for doing a GIMP release
 
  ( ) Announce a string freeze on the GIMP Developer mailing list.
- 
+
      Mention that a release is planned, what brach will be frozen, and
      how long the string freeze is going to last. Plan for a couple of
      weeks at least. No translatable strings must be touched during
@@ -63,9 +63,6 @@
 
      [ ] Run 'make' to do a complete build of the source tree.
 
-     [ ] Close all running GIMP instances, we don't want any unique
-         code called during 'make distcheck'.
-
      [ ] Run 'make distcheck'. Avoid passing make -j since that can
          cause mysterious fails.
 
@@ -94,6 +91,10 @@
      to the next odd micro and commit this change. GIT versions always
      have odd micro numbers.
 
+     [ ] In configure.ac, modify gimp_micro_version accordingly.
+
+     [ ] In configure.ac, modify gimp_interface_age accordingly.
+
  ( ) Publish dist tarballs:
 
      [ ] Use md5sum to create a checksum of the tarball (tar.bz2).
@@ -124,8 +125,8 @@
      [ ] Create a news items for the release in content/news/
 
      [ ] Commit and push the changes, the web server should then
-         update itself soon (every 5 minutes). Go to
-         https://testing.gimp.org to verify the changes.
+         update itself soon (it checks for updates every 5 minutes).
+         Go to https://testing.gimp.org to verify the changes.
 
  ( ) Grab a properly chilled beverage and enjoy yourself.
 
@@ -137,8 +138,8 @@
          the changes you did in the testing branch.
 
      [ ] Push the changes, the web server should then update itself
-         soon (every 15 minutes). Got to https://www.gimp.org to
-         verify the changes.
+         soon (it checks for updates every 15 minutes).
+         Go to https://www.gimp.org to verify the changes.
 
      [ ] Due to the tendency of news sites to front-run release
          articles even before actual announcements appear, publish