[chirp_users] New Daily Build

[Build System]

Greetings,

A new daily build of CHIRP is available.  This includes changes made
directly to the tree yesterday, and may include additional features,
bug fixes, and/or bugs.  If you are interested in trying it, grab it
from the following location:

  http://trac.chirp.danplanet.com/chirp_daily/daily-20170420


A list of the changes included in this build (since the last daily)
follows:

Changes for Build #477
[Tom Hayward <tom at tomh.us>] [TK-270] Refactor for simplicity and readability. #4731

- Rename radio ID function of obviousness.
- Use standard string reversal trick instead of for loop.

[Tom Hayward <tom at tomh.us>] [TK-760G] Unobfuscate valid character filter. #4731