Revert "Using newest Sparkle built from github repo (osx)"

This reverts commit 3b8ca7af5605b65a37f6cb91414d32fb95d2785c.
Revert "Using Sparkle 1.5beta6 (osx)"

This reverts commit e7566e8eb219930c27a5523218c8008da848c707.
Revert "Revert "Added relaunch to Sparkle (osx)""

This reverts commit c6520c127956a0aaa9297541bf1cbf08c018067c.