Merge pull request #93 from sunyc/master

adding missing sys/rusage.h
Merge pull request #96 from sunyc/master

Fully migrate to autoconf
Merge pull request #97 from sunyc/master

Fluffos 3.0-alpha4
Merge pull request #98 from sunyc/master

Correct check for mysql library/header when USE_MYSQL is defined.
Update travis test config.
Merge pull request #99 from sunyc/master

More compile fix with dependency detection.
Reinstating rusage efun.