Relicense displace.sh.in under the MIT license

Signed-off-by: Anders Kaseorg <andersk@mit.edu>
Signed-off-by: Tim Abbott <tabbott@mit.edu>
[geofft@mit.edu: Add a header and footer so it's obvious what the copyright applies to]
Signed-off-by: Geoffrey Thomas <geofft@mit.edu>

displace.sh.in

@@ -1,3 +1,4 @@
+# displace.sh.in: diversion helpers for maintainer scripts
 #
 # displace_link <prefix> <suffix>
 #
@@ -13,6 +14,29 @@
 #
 # Version: 4.0
 #
+# Copyright © 2008–2012 Tim Abbott <tabbott@mit.edu> and Anders
+# Kaseorg <andersk@mit.edu>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation files
+# (the “Software”), to deal in the Software without restriction,
+# including without limitation the rights to use, copy, modify, merge,
+# publish, distribute, sublicense, and/or sell copies of the Software,
+# and to permit persons to whom the Software is furnished to do so,
+# subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+#
 
 package=#PACKAGE#
 
@@ -131,3 +155,5 @@ check_undisplace_unhide()
 	undisplace_unhide "$file"
     fi
 }
+
+# End of divert.sh.in