cmListFileLexer: regenerate with flex 2.6.4 (previously 2.6.1)
update generated cmListFileLexer and clean up the manual steps a bit.
this is the preparation to update my merge request !1153 (merged) later on.
update generated cmListFileLexer and clean up the manual steps a bit.
this is the preparation to update my merge request !1153 (merged) later on.