TS-2419: Don't close client connection when responding with a 204 and
there is no body - Fixed a bug when the 204 is served by cache
Reorder the build subdirs, such that all code compiles first
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/trafficserver
Add parans to fix build error with -Wall from commit a5c00b225
Add parans to the _right_ place to fix build with -Wall