vchoi_fork

[svn-r11325] Purpose:
Update scaleoffset filter.

Description:
1. Using enum type to describe scale offset type(int, Dscale or Escale)
2. Changing some macro names
3. Fixing some minor bugs

Solution:

Platforms tested:
sol 2.8, linux 2.4, aix 5.1(32-bit and 64-bit)

Misc. update: