Disable hooks during tests.

Individual tests for hooks would want to have their own tests when
written.  Also we should not pick up from random templates the user
happens to have.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

t/test-lib.sh

@@ -164,4 +164,8 @@ test=trash
 rm -fr "$test"
 mkdir "$test"
 cd "$test"
-git-init-db 2>/dev/null || error "cannot run git-init-db"
+git-init-db --template=../../templates/blt/ 2>/dev/null ||
+error "cannot run git-init-db"
+
+mv .git/hooks .git/hooks-disabled
+