Apache 2.3 offers numerous enhancements, improvements, and performance
boosts over the 2.2 codebase.
This release includes the Apache Portable Runtime (APR) version 1.4.2
and APR-Util version 1.3.9 in a separate -deps tarball. The APR libraries
must be upgraded for all features of httpd to operate correctly.
This release builds on and extends the Apache 2.2 API. Modules written
for Apache 2.2 will need to be recompiled in order to run with Apache
2.3, and require minimal or no source code changes.