This avoids the need for a confusing line of the form:
DEINSTALL_TEMPLATE+= path/to/INSTALL
in the package Makefile, and actually removes the need to specify it
altogether since by convention, the existence of the DEINSTALL script
is enough to add it to DEINSTALL_TEMPLATE.
is, using the PKG_SYSCONFDIR stuff. apsfilter needs a symlink in the
configuration directory, so add an INSTALL script to create it (which
handles all DEINSTALL stuff too). Bump PKGREVISION to 2.
Approved by wiz.
This closes PR 18994.
