Ticket 48111 - "make clean" wipes out original files
    
    Description: BUILD: Do not remove files in git/tarball with make clean
    
    make clean removed following files which are stored in git
      ldap/admin/src/scripts/dbmon.sh
      ldap/ldif/50replication-plugins.ldif
      ldap/ldif/90betxn-plugins.ldif
      ldap/ldif/50posix-winsync-plugin.ldif
    
    The following make fails with:
    make[1]: * No rule to make target ldap/admin/src/scripts/dbmon.sh', needed by
    all-am'. Stop.
    
    https://fedorahosted.org/389/ticket/48111
    
    Signed-off-by: Lukas Slebodnik <lslebodn@redhat.com>