[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-20150321


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

Changes for Build #341
[Richard Cochran <ag6qr at sonic.net>] [ft2900] Fix cross tone when channel entered via Radio panel (#2445)
This submission makes FT-2900 cross tone support more robust, and protects
against a problem where the radio would sometimes use the high order bit
of the tone and/or DTCS code field as a bit flag.  The code had been
using the entire byte as an index into the TONES or DTCS_CODES array,
and when the high order bit was set, the value was too high by 128,
resulting an array bounds error.  Fix is to alter MEM_FORMAT to separate
the high order bit flags from the lower 7 bit tone and code fields.
This also adds some error checking via a "try" block to catch any
remaining array bounds errors (though none are expected).  And it
adds code which attempts to set those bit flags the way the radio would
have set them, even though the flags seem to have no effect on the way
the radio transmits or receives.

Thanks to Chris Fosnight for finding and reporting the problem.

[Marco Filippi <iz3gme.marco at gmail.com>] [chirpc] Allow deleting an already empty memory

On some radio (eg ft817) empty channels can contain valid data, deleting again
such a memory usually clean data

Improves #2343

[Marco Filippi <iz3gme.marco at gmail.com>] [chirpc] Allow memnum arg to be a string to access special channels

Special channels are identified by extd_number which can be a string

Improves #2343

[Marco Filippi <iz3gme.marco at gmail.com>] [chirpc] Add --list-special-mem

Add to chirpc the capability to list special channels if any
The string memory representation have been changed to print the extd_number when
present instead of number

Improves #2343