As conversation with Jerry, sendfile comes to 2.2.6.... (off by default).
tree27ee11125a55c0614a01584fe6af676ba40f5ed6
-rw-r--r-- 17982 COPYING
-rw-r--r-- 4551 Manifest
-rw-r--r-- 6554 README
-rw-r--r-- 0 Read-Manifest-Now
-rw-r--r-- 1894 Roadmap
-rw-r--r-- 37910 WHATSNEW.txt
drwxr-xr-x - docs
drwxr-xr-x - examples
drwxr-xr-x - packaging
drwxr-xr-x - pcp
drwxr-xr-x - source
drwxr-xr-x - swat
drwxr-xr-x - testsuite