CMake: Disabled agent build on Windows.
CMake: Disabled agent build on Windows.

Review: https://reviews.apache.org/r/38837

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