vchoi_fork

[svn-r8262] Purpose:  Avoid bug in some systems.

Description:  unsigned long or unsigned long long failed to be converted to
float or double during software conversion on some systems.  It's believed
there are bugs on those systems(modi4, premium, o2, arabica).

Solution:  temporarily disable these tests.

Platforms tested:  Simply comment out.  No need to do test.