(PUP-392) update win32 gems (1.9.3-x86)

This provides updates for gems that don't have known issues for upgrade.
 
* This upgrades win32-eventlog from 0.5.3 to 0.6.1
* This upgrades win32-process from 0.6.5 to 0.7.4.
* This upgrades win32-dir from 0.4.8 to 0.4.9.