pkg-dist.mk queries the package relations with
--dont-expand-version-macros, and build_pkg() expanded the remaining
VERSION and VERSION-REVISION macros with a local sed-based
expand_version_macros(). That substitutes the version of the project being
built for every macro, instead of the version of the dependency the macro
refers to.
Drop --dont-expand-version-macros from the proj_query calls so the macros
resolve to the dependency's own version, and remove expand_version_macros()
from build_pkg(), which passes the PKG_* variables to rpmbuild as they are
queried.
Signed-off-by: Jan Lindemann <jan@janware.com>