* removed source files for Cfft, the original fast fourier
transform used in fldigi. Cfft has been replaced by
g_fft, the fast fourier transform C++ template based on
public domain code by
John Green <green_jt@vsdec.npt.nuwc.navy.mil>
* Modified prosign / character translation
* Simplified morse table structure
* Print translated prosign character when transmitted
* Allow user selection of ')' or <AR> prosign
both have same Morse representation
* Added style override for both put_rx_char and put_echo_char
functions. Allows prosigns to be display using CTRL style.
* Modified xml generator for fldigi_def.xml to suppress xml
key characters in the xml documentation block
* Added additional controls to aid in QSK adjustments
* Modified QSK channel signal generation
* Increased range for both pre and post QSK timing
* added code to make element to element signal be phase coherent
* added signal carryover between symbol intervals
* added new macro tags
<WPM:nn>
<RISE:dd.dd>
<PRE:dd.dd>
<POST:+/-dd.dd>
Rename sound classes to avoid a conflict with an enum named
cSound and defined in a system header on OSX:
cSound -> SoundBase, cSoundOSS -> SoundOSS, cSoundPA -> SoundPort
cMixer -> MixerBase, cMixerOSS -> MixerOSS
Also enable MixerBase ctor & virtual dtor, and delete some old comments
in the SoundPort declaration.