[PATCH] githooks documentation: add a note about the +x mode

In a freshly initialized repo it is only necessary to rename the .sample
hooks, but when using older repos (initialized with older git init)
enabled the +x mode is still necessary - docuement this.

Signed-off-by: Miklos Vajna <redacted>
---

On Wed, Dec 17, 2008 at 08:55:45PM +0100, Markus Heidelberg [off-list ref] wrote:

When you want to learn how to use hooks, you will probably rather read
githooks(5), where the need for the executable bit is not even
explicitly mentioned. Maybe it should be added there?

I think so.

 Documentation/githooks.txt |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/Documentation/githooks.txt b/Documentation/githooks.txt
index 5faaaa5..cfdae1e 100644
--- a/Documentation/githooks.txt
+++ b/Documentation/githooks.txt

@@ -20,6 +20,10 @@ directory to trigger action at certain points.  When
 all disabled.  To enable a hook, rename it by removing its `.sample`
 suffix.
 
+NOTE: It is also a requirement for a given hook to be executable.
+However - in a freshly initialized repository - the `.sample` files are
+executable by default.
+
 This document describes the currently defined hooks.
 
 applypatch-msg

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1.6.1.rc1.35.gae26e.dirty