gas/Makefile.am bug fix

[Jeffrey A Law]

  In message < 0004172348.AA03422@ivan.Harhan.ORG >you write:
  > Hi there,
  > 
  > The patch below fixes a simple bug in gas/Makefile.am. I hit this bug becau
  > se
  > it prevents me from using my native yacc and lex, but it's really just a si
  > mple
  > bug, as configure already sets @YACC@ and @LEX@ correctly, but Makefile.am
  > fails to use them. Please apply this patch, release branch too, as this is 
  > just
  > a simple bug.
Actually, I don't think we want to even try to support native yacc/lex for
this stuff.  I'd rather see us use bison/flex exclusively.  

Just my $0.02, Ian has the final say on this.

jeff