Add support for --expand-semver-revision-range to
cmds.projects.BaseCmdPkgRelations.pkg_relations(). The options turns
a dependency in projects.conf
pkg.requires.os.devel = jw-pkg-devel = VERSION
into
jw-pkg-devel >= 1.2.3, jw-pkg-devel < 1.2.4
Note that this will break as soon as a real range is specified in
projects.conf. To be fixed later, this commit is at least less
breakage than before.
Signed-off-by: Jan Lindemann <jan@janware.com>