Well, it's out. I'll build it tomorrow or Saturday evening for 2.2.18/19 unless you beat me to it Mario ;) If you do, build it against a svn dump of httpd and the test tarballs for APR 1.4.5 & APU 1.3.12, that way it will not squeal come 2.2.19.
I was looking in the tracker a few minutes ago and "they" say it works with 2.3.x, but I may have to get on there and tell them "they" are wrong, unless they realized the check for Apache's API is not APR/2, and they romoved or circumvented the hook that no longer exists in 2.3.
@Devsys, the answer is no ;D It will be included w/ 2.3.12 which should come in a couple of days, around the same time or sooner than 2.2.19.
Thank you for the update Gregg. I am currently running Mod_Security 2.6.0 RC1 with Apache 2.3.1. It works fine and catches a lot (oh the joys of having Apache with Mod_Sec on a server for an international company).
Looking forward to your build of Apache 2.3.12 when it's ready.
~S