69c2a92e4d
the implementation of the following feature in revision 1.4: - Install Makefile.yp as /var/yp/Makefile.dist and link it to /var/yp/Makefile only if /var/yp/Makefile doesn't already exist. Suggested by Peter Wemm. The actual code was only symlinking when no /var/yp/Makefile.dist existed, i.e., never.