Upstream changes
Merge remote-tracking branch 'origin/netlib'
Fix the Windows build.
Fix the Windows build, take 2.
Update buildbot config.
Use set_property instead of set_target_properties.
Fix test.
More configuration options for uploading files. Fix upload of path DLLs.
Create cache directory if it doesn't exist.
Use a temporary directory for building packages.
Use ampltabl from http://www.ampl.com/NEW/TABLEPROXY/ as Google Code downloads are discontinued. Add a --cache option.
Fix script.
Use correct package name for 64-bit Linux.
Fix url.
Move timer to a separate package for reuse.
Add print_time.
Extend create-demo-packages.py script to move packages to the server.
Simplify bootstrap scripts by using timer.print_time.
Use command-line tar instead of shutil.make_archive because the latter is too slow.
Create cache directory if it doesn't exist.