Fixing http_put and maybe http_get_timeout

Change to initialization value of a variable fixes regression in
http_put, which was causing Windows floppy disk upload to fail.

Turning off buffering on the file pointer used in http_get_timeout
has been reported by one of the users to solve a problem with
incomplete downloads from CC image cache. See EUCA-4964 for details.

Fixes EUCA-7042, EUCA-4964
Merge branch 'dev/dmitrii/vmware-windows' into maint/3.3/testing