Adds a new config param "-C fakefreq=1"
The ft757gx only has one-way comm so this simply returns the last freq
set.
WSJT-X can operate in fake it split mode with this too.
RRR
Mike W9MDB
Change FT757GX_DEFAULT_READ_TIMEOUT to be FT757GX_STATUS_UPDATE_DATA_LENGTH * (5 + (FT757GX_PACING_INTERVAL * FT757GX_PACING_DEFAULT_VALUE))
by default. Should allow 375 mS for read timeout at minimum in ft757gx.h
git-svn-id: https://hamlib.svn.sourceforge.net/svnroot/hamlib/trunk@2373 7ae35d74-ebe9-4afe-98af-79ac388436b8