VA-503+ BIOS Update

PCB: 1.1x
BIOS revision: 1.15jk34, AWARD BIOS
Date: 
BIOS Utility: flash703.exe
Remark: This BIOS does not improve performance; CPU ID strings are only  bytes of text that make the BIOS correctly display the processors name.
Fixes:
1. support 95MHz
2. support k6-2,K6-III
3. support ATA/66