1. configure.in changed to put a version/time on makelinuxdist.sh.in just like...

   1. configure.in changed to put a version/time on makelinuxdist.sh.in just like the other platforms.
   2. app.pro to remove references to makeextras.mak which was just an experimental thing.
   3. data field enable/disable management for split distance.
   4. cover script for linux "gpsbabelfe" rewritten from scratch.  Old one from googleearth had problems and useless stuff anyway.  It wouldn't work with multiple link and blank spaces within directory, and its PATH search was totall unnecessary for Linux.
   5. help.cpp tidied up.
   6. track title entry field widened in the UI.