Disable 'epoll' in libevent implementation.
Disable 'epoll' in libevent implementation.

There are currently issues when using 'epoll' with ssl support. We can
re-enable this when these are resolved.

Review: https://reviews.apache.org/r/36147

abudnik/mesos,craimbert/mesos,dforsyth/mesos,Gilbert88/mesos,craimbert/mesos,reneploetz/mesos,zmalik/mesos,jpeach/mesos,jpeach/mesos,jpeach/mesos,craimbert/mesos,chhsia0/mesos,abudnik/mesos,reneploetz/mesos,yuquanshan/customizedMesos,Gilbert88/mesos,kaysoky/mesos,abudnik/mesos,yuquanshan/customizedMesos,abudnik/mesos,verizonlabs/mesos,verizonlabs/mesos,neilconway/mesos,yuquanshan/customizedMesos,zmalik/mesos,verizonlabs/mesos,kaysoky/mesos,craimbert/mesos,gsantovena/mesos,Aman-Jain-14/customizedMesos,kaysoky/mesos,Aman-Jain-14/customizedMesos,asamerh4/mesos,reneploetz/mesos,dforsyth/mesos,andschwa/mesos,zmalik/mesos,chhsia0/mesos,kaysoky/mesos,craimbert/mesos,jpeach/mesos,zmalik/mesos,kaysoky/mesos,Gilbert88/mesos,dforsyth/mesos,yuquanshan/customizedMesos,abudnik/mesos,craimbert/mesos,neilconway/mesos,zmalik/mesos,Gilbert88/mesos,Gilbert88/mesos,dforsyth/mesos,Gilbert88/mesos,verizonlabs/mesos,Aman-Jain-14/customizedMesos,jpeach/mesos,yuquanshan/customizedMesos,yuquanshan/customizedMesos,Aman-Jain-14/customizedMesos,dforsyth/mesos,asamerh4/mesos,chhsia0/mesos,jpeach/mesos,verizonlabs/mesos,craimbert/mesos,chhsia0/mesos,gsantovena/mesos,dforsyth/mesos,jpeach/mesos,asamerh4/mesos,Aman-Jain-14/customizedMesos,neilconway/mesos,Aman-Jain-14/customizedMesos,andschwa/mesos,zmalik/mesos,asamerh4/mesos,neilconway/mesos,abudnik/mesos,gsantovena/mesos,asamerh4/mesos,kaysoky/mesos,reneploetz/mesos,verizonlabs/mesos,chhsia0/mesos,andschwa/mesos,chhsia0/mesos,gsantovena/mesos,asamerh4/mesos,neilconway/mesos,andschwa/mesos,andschwa/mesos,andschwa/mesos,gsantovena/mesos,kaysoky/mesos,dforsyth/mesos,reneploetz/mesos,reneploetz/mesos,Gilbert88/mesos,andschwa/mesos,yuquanshan/customizedMesos,gsantovena/mesos,chhsia0/mesos,asamerh4/mesos,verizonlabs/mesos,neilconway/mesos,reneploetz/mesos,gsantovena/mesos,Aman-Jain-14/customizedMesos,abudnik/mesos,neilconway/mesos,zmalik/mesos