Reworked LFLAGS hack for flex 2.5.35 and 2.5.36 to work on Ubuntu.  And use sed instead of ed.
Reworked LFLAGS hack for flex 2.5.35 and 2.5.36 to work on
Ubuntu.  And use sed instead of ed.

dscho/nmh,mcr/nmh,dscho/nmh,dscho/nmh,mcr/nmh,dscho/nmh