Bugs fixed
02/05/03  inserted %array directive to lex.l (needed for current version of
          flex) Thanks to Minh Nguyen at mnguyen@maplesoft.com for bringing
          the error to my attention.
00/12/14  changed Makefile for Linux 2.2 (thanks to Konstantin Oppl at
          a9406573@unet.univie.ac.at for the fix).
99/04/22  remove requirement for trailing blanks in ALF statements
99/04/13  version 1.02
99/04/13  gcc compilation of mixal generates many integer overflow messages
99/04/13  mixal uses locations instead of line numbers to order local symbols
98/08/19  version 1.01
98/08/19  mixal crashes under linux because of a null pointer
