Changed condition variables to WaitForSingleObject

For XP support
Remove dependency on MSVCRxx.dll for libadb

Link to the runtime statically
Removed unused variable and cleaned up var names
Merge pull request #740 from bkase/condition-variable-gone

Changed condition variable API so that XP would work r=@ochameau
Merge pull request #745 from bkase/statically-link-mt

Remove dependency on MSVCRxx.dll for libadb
Simplified mutex-related code in Windows shutdown
Merge pull request #752 from bkase/mutex-simplification

Simplified mutex-related code in Windows shutdown routine r=@ochameau
Merge pull request #3 from mozilla/master

Keeping Central upto date