use-package-with-elapsed-timer: respect option at runtime

Previously the option `use-package-verbose' was consulted at macro
expansion time, and as a result customizing the option did nothing,
without also recompiling `use-package.el'.
use-package-with-elapsed-timer: add declare indent rule
use-package-font-lock-keywords: add use-package-with-elapsed-timer
Merge pull request #96 from tarsius/master

use-package-with-elapsed-timer: respect option at runtime