$Id: apr_license.txt 1355 2008-06-23 16:39:10Z peter $
We have copied apr_common.m4 (revision 662522) from the Apache
Portable Runtime Library (APR) 
http://projects.apache.org/projects/portable_runtime.html
No modification is made to the file.

APR is distributed under the Apache License v2,
http://www.apache.org/licenses/LICENSE-2.0