Log Message:
Update to Transmission-1.73.

All Platforms
* Fix bug where user-configured peer limits could be exceeded
* Use less memory in some high-peer situations
* Better estimation of time left to download
* Support supportcrypto and requirecrypto flags in http tracker announces
* Update to newer snapshots of libnatpmp and miniupnpc
* Make DHT a compile-time option
GTK+
* Use GDK-safe versions of g_idle_add() and g_timeout_add*()
* Save some space in GTK+ >= 2.16.0 by not building SexyIconEntry
Qt
* Fix bug that crashed Qt client when setting alternative up/down speeds
Daemon
* Add umask support
Web Client
* Inspector and Add Torrent buttons for iPhone/iPod Touch
* Add location field to inspector
CLI
* Some torrent files created with transmission-cli were invalid