(f90-no-block-limit): Fixed bug for indentation of

(f90-no-block-limit): Fixed bug for indentation of
elsewhere and elseif.
(f90-looking-at-where-or-forall): Now allows for labelled forall
and where statements.
(f90-font-lock-keywords-2): New highlighting for labelled where
and forall. Fixed small bug with else highlighting.
(f90-fill-region): Moved indentation to f90-break-line.
(f90-break-line): Will now always indent the second line.
(f90-indent-line): Simpler test for auto-fill.
(f90-auto-fill-mode): Removed.
(f90-electric-insert): Added for possibility of auto-filling of
lines without spaces, as well as early updating of line.
(f90-mode-map): Added bindings of operators to f90-electric-insert.
(f90-do-auto-fill): Now also updates line (changes case).