Originally added in commit 40d6414f28,
the purpose of the above target definitions was to allow using the
static-only symlink variant of slibtool (i.e. slibtool-static) in
those build steps which required it. Given slibtool's newly added
ability to auto-detect its desired operation mode (shared-only,
static-only, or both), as well as the integration of rlibtool
support in mcm, the aforementioned explicit target definitions
are no longer needed.