(ITS#6050) make install overwrites schema dir

Full_Name: Theral Mackey Version: 2.4.16 OS: Linux/Debian URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (216.200.8.2)

Running make install leaves an existing slapd.conf alone, but happily nukes and replaces the existing schema directory, taking with it any additional or custom schema, leaving you with only the ones installed by default (hooray for svn and backups!).

For consistency, it should probably either nuke slapd.conf as well, or leave an existing schema dir alone (I vote for option 2).

fix should be as simple as an 'if [ ! -d $base/schema ] ; then (mkdir, cp schemas, etc) ; fi' around where it drops the schemas in place in the Makefile