*
* This is MGC4C Version 2.2
*

Version 1.0.6, December 10, 2001
   Initial release.

Version 1.0.7, March 8, 2002.
   Any keycode matches shareware DLL.

Version 1.1.0  March 14, 2002.
   Can set baud serial port parameters.
   Added mgcRelease().
   gpsConvertDecimal breaks on '.'  [bld 4]
   gpsConvertAltitude handles minus sign.

Version 1.1.2 September 10, 2002.
   Added mgcErrorText.

Version 1.2 February 4, 2003
   Minor changes.
   
Version 1.3 February 18, 2005
   Modified to work with some poorly behaved USB/RS232 serial ports.
   MGC_SET_SLEEP to set work buffer sleep time (default 30).
   Added mgcStatus() function.
   
Version 1.4 March 3, 2005
   Added $GPVTG sentence type.
   Added GPVTG example program.
   Added support for C# (MGC4C)

Version 1.4.1 July 21, 2005
   NBR_PORTS increased to 24.

Version 1.4.2 January 23, 2006
   NBR_PORTS increased to 64.

Version 1.5.0 September 15, 2006
   Sleep time automatically adjusted for maximum performance

Version 2.0.1 June 22, 2007
   Error code moved to -200,000 (and below) to avoid conflict with code integer latitudes & longitudes
   mgcLatitude & mgcLongitude can extract latitude & longitude from GPRMC sentences.
   Increased "NO DATA" (mgcStatus) time from 1.25 seconds to 2.25 seconds.
   mgcStatus tests port immediately after opening.
   mgcBearing returns the bearing in units of thousandths of a minute (1000 units = 1 deg).
   Two sentence type can be specified rather than just one. See GGA_RMC.C
   mgcGetSentenceType added that returns the current sentence type (defined in mgc.h)
   mgcNewLatitude added that returns a new latitude at a specified distance and bearing.
   mgcNewLongitude added that returns a new longitude at a specified distance and bearing.
   mgcCallback added that implements a callback function. See the CALLBACK.C example program.

Version 2.1.0 March 2, 2009
  mgcSetInteger(MGC_SET_BAUDRATE, baud-rate) changes baud rate immediately.
  Added GPBOD sentence type.
  Added GPWPL sentence type.
  Number of ports increased to 256 (COM1 through COM256).
  Added documentation in Adobe PDF format. 
  
Version 2.2.0 June 8, 2011
  Added support for 64-bits (Win64).
  Added $GPGSA sentence type.
  Fixed problem with leaking thread handle.

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