Adjust for the new way of enabling the default post-update hook

The post-update hook, which is required to be enabled in order for
the repository to be accessible over HTTP, is not enabled by
chmod a+x anymore, but instead by dropping the .sample suffix.

This patch emphasizes this change in the release notes (since
I believe this is rather noticeable backwards-incompatible change).
It also adjusts the documentation which still described the old way
and fixes t/t5540-http-push.sh, which was broken for 1.5 month
but apparently noone ever runs this test.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/RelNotes-1.6.0.txt

@@ -28,6 +28,16 @@ introduced in v1.5.2 and v1.4.4.5.  If you want to keep your repositories
 backwards compatible past these versions, set repack.useDeltaBaseOffset
 to false or pack.indexVersion to 1, respectively.
 
+We used to prevent sample hook scripts shipped in templates/ from
+triggering by default by relying on the fact that we install them as
+unexecutable, but on some filesystems, this approach does not work.
+They are now shipped with ".sample" suffix.  If you want to activate
+any of these samples as-is, rename them to drop the ".sample" suffix,
+instead of running "chmod +x" on them.  For example, you can rename
+hooks/post-update.sample to hooks/post-update to enable the sample
+hook that runs update-server-info, in order to make repositories
+friendly to dumb protocols (i.e. HTTP).
+
 GIT_CONFIG, which was only documented as affecting "git config", but
 actually affected all git commands, now only affects "git config".
 GIT_LOCAL_CONFIG, also only documented as affecting "git config" and
@@ -56,11 +66,7 @@ Updates since v1.5.6
   gangs.
 
 * Sample hook scripts shipped in templates/ are now suffixed with
-  *.sample.  We used to prevent them from triggering by default by
-  relying on the fact that we install them as unexecutable, but on
-  some filesystems this approach does not work.  Instead of running
-  "chmod +x" on them, the users who want to activate these samples
-  as-is can now rename them dropping *.sample suffix.
+  *.sample.
 
 * perl's in-place edit (-i) does not work well without backup files on Windows;
   some tests are rewritten to cope with this.

Documentation/gitcore-tutorial.txt

@@ -1366,8 +1366,9 @@ your login shell is 'bash', only `.bashrc` is read and not
 
 [NOTE]
 If you plan to publish this repository to be accessed over http,
-you should do `chmod +x my-git.git/hooks/post-update` at this
-point.  This makes sure that every time you push into this
+you should do `mv my-git.git/hooks/post-update.sample
+my-git.git/hooks/post-update` at this point.
+This makes sure that every time you push into this
 repository, `git update-server-info` is run.
 
 Your "public repository" is now ready to accept your changes.
@@ -1486,11 +1487,11 @@ A recommended workflow for a "project lead" goes like this:
 If other people are pulling from your repository over dumb
 transport protocols (HTTP), you need to keep this repository
 'dumb transport friendly'.  After `git init`,
-`$GIT_DIR/hooks/post-update` copied from the standard templates
-would contain a call to 'git-update-server-info' but the
-`post-update` hook itself is disabled by default -- enable it
-with `chmod +x post-update`.  This makes sure 'git-update-server-info'
-keeps the necessary files up-to-date.
+`$GIT_DIR/hooks/post-update.sample` copied from the standard templates
+would contain a call to 'git-update-server-info'
+but you need to manually enable the hook with
+`mv post-update.sample post-update`.  This makes sure
+'git-update-server-info' keeps the necessary files up-to-date.
 
 3. Push into the public repository from your primary
    repository.

Documentation/user-manual.txt

@@ -1890,7 +1890,7 @@ adjustments to give web clients some extra information they need:
 $ mv proj.git /home/you/public_html/proj.git
 $ cd proj.git
 $ git --bare update-server-info
-$ chmod a+x hooks/post-update
+$ mv hooks/post-update.sample hooks/post-update
 -------------------------------------------------
 
 (For an explanation of the last two lines, see

t/t5540-http-push.sh

@@ -41,7 +41,7 @@ test_expect_success 'setup remote repository' '
 	git clone --bare test_repo test_repo.git &&
 	cd test_repo.git &&
 	git --bare update-server-info &&
-	chmod +x hooks/post-update &&
+	mv hooks/post-update.sample hooks/post-update &&
 	cd - &&
 	mv test_repo.git "$HTTPD_DOCUMENT_ROOT_PATH"
 '