Initial OS support.
Fix welcome message not showing up when connecting to pysnip
Merge branch 'master' of https://github.com/yvt/openspades
Merge remote-tracking branch 'learn_more/master'
Merge pull request #2 from UnrealIncident/master

Added initial PySnip OS integration.
implement windows version check
limbo menu responds to 1,2,3
Merge branch 'master' of https://github.com/yvt/openspades
fix refcounted object
cleanup headers usage (don't include everything in base classes, just include what's needed in .cpp)
Merge branch 'master' of https://github.com/yvt/openspades
Merge branch 'master' of https://github.com/yvt/openspades
Merge pull request #94 from learn-more/master

welcome message, text render/shadow, protocol additions