v2.04

Driver Version :6.0.0.18
FW Version :1.2.0.30
Utility Version :2.04

Fixes:
1. Modify utility and install bugs
2. First release based on UI beta12 and driver 6.0.0.18 with cat

Modify:
1. Pre-install inf file for winXP platform
2. Correctly mask PSK passphrase in page encryption
3. Correctly get supported rate list
4. Add limit user support for utility
5. Add cat file for winXP platform
6. Upgrade utility version to 2.04
7. Modify 4X mode display