Fix glob_t usage

Only declare glob_t variable on systems which use it, otherwise build fails on
systems (kfreebsd) which don't supply (or try to use) glob_t.
Compiler warning fix

  * gcc 4.5.2 compiler warning for parenthesis ambiguity
Fltk backward compatibility

  * Code changes to maintain backward compatibility to fltk versions
    prior to 1.3.2
  * revised fltk.m4 to test for MAJOR, MINOR & PATCH levels
RTTY update

  * Removed code used for filter tests
  * Added CWI suppression, select decoding of
    - Mark-Space
    - Mark only
    - Space only
Double Click bug fix

  * Double click text selection for transfer to QSO record fields
Tabs Colors

  * Added ID / QRZ tabs to color schema
Contestia/Olivia

  * Quick change / custom dialog
  * Corrected Contestia callback in confdialog.fl
  * Corrected resetOLIVIA function
Version 3.21.70

  * Maintenance release
Merge tag 'v3.21.70' of git://git.berlios.de/fldigi

Conflicts:
	src/dialogs/confdialog.cxx
	src/dialogs/confdialog.fl