Added mode specifier to spot_recv and viewaddchr
Allows continued correct psk31 reporting from pskviewer when
a mode such as QPSK or PSKR is being used in the primary
decoder channel.
* Add RSID event type
* Add RSID receive options to:
- Notify only
- Enter RX text marker before changing modem and frequency
* Add close buttons
* Fix notification window callback
* Remove re_t assignment operator
* Use RE matching for callsign filter
* Use unordered_maps (or hash_maps on ancient gcc4 versions)
* Store the spot callbacks such that RE searching is minimised
* Store list of country names
Windows does not recognize '\2' reference tag in regular
expression defined in pskrep.cxx. Changed to combination
of regexec and string find processing for required result.
Added modem frequency to spotting call when logging or
forcing a spot report.
David Freese