Peter Wemm 634e3a5c83 Add some rationale about when to bump and not bump the config version.
Clarify that it is not like the shlib versions, and not like param.h's
__FreeBSD_version/osreldate either.

When config(8) was actively changing a while back, the interface between
config and the build system (eg: /sys/conf/files.* and Makefile.*) was
changing rapidly.  configvers is a version number of that interface.

User specified config files do not have a version number.  The decision
about whether a user supplied config file is syntactically valid or not
belongs to the parser and sanity checks, not an arbitary number.
2005-11-07 17:37:27 +00:00
..