patch for #pragma interfac/implementation bug.

[Jeffrey A Law]

  In message < 9801060859.AA25221@progis.de >you write:
  > Looks like this was also preventing g++ from generating vtables on
  > openVMS/Alpha !!
Hopefully Jason will look at the lex patch shortly :-)

  > Now I'd like to know
  > 
  > - why is lex.c parsing file information from the preprocessor ?
As I believe someone has probably mentioned the #pragma interface
stuff is actually for the compiler, not the preprocessor.  Similar
to #line directives.

  > - is this behaviour documented anywhere ?
Good question.

  > > Tue Jan  6 09:42:42 1998  Klaus Kaempf <kkaempf@progis.de>
  > > 
  > > 	* alpha/vms.h (DIR_SEPARATOR): define
  > > 
I've installed this patch.

jeff