Defines the top level frame window for the UI as well as the dialogs.  the MainFrame classs and all of the dialog classes inherit from this.
Defines the top level frame window for the UI as well as the dialogs.  the MainFrame classs and all of the dialog classes inherit from this.

git-svn-id: 31cbfd89c62d6b8b302bb3be5c74ebef9d32ffd0@434 01035d8c-6547-0410-b346-abe4f91aad63

tmiw/freedv-osx,tmiw/freedv-osx,tmiw/freedv-osx