Use PLATFORM set in appveyor.yml to determine which build configuration is set up
Restrict test cases and find out what PLATFORM is actually set to
Insert a critical missing space in front of platform name

For posterity: AAAAAAARRGHHH
Remove debugging print statement
Reduce number of test cases

Appveyor builds are taking ~20 min each
Whitespace changes
Merge pull request #6 from mwcraig/fix-arch

Use PLATFORM set in appveyor.yml to determine build configuration