Avoid file extensions on scripts

Borrowing from the Debian policy, you might reimplement the same
functionality using a different language such as Perl or Python. So
avoid having a file extension in the first place. What are we, Windows
users?

Signed-off-by: Dan Scott <dan@coffeecode.net>
Signed-off-by: Thomas Berezansky <tsbere@mvlc.org>

diff --git a/build/tools/make_release.sh b/build/tools/make_release
similarity index 100%
rename from build/tools/make_release.sh
rename to build/tools/make_release