Fix ordering in top-level CMakelists.txt.

Property definitions need to be ahead of subdirs.

Signed-off-by: Matt Benjamin <matt@linuxbox.com>
The -real- strict compile fixes.

Unused variables zapped previously were unused (ahem)
because TIRPC_EPOLL was improperly not defined.

Signed-off-by: Matt Benjamin <matt@linuxbox.com>