vchoi_fork

[svn-r6925] Purpose:
bug fix

Description:
the signed / unsigned comparison was not properly handled.
the fixtype function sets the sign for the memory type the same sign as found on disk
and the array_diff function only handled signed cases

Solution:
addded for each INTEGER size type an OR condition with the unsigned version
if the datatypes have different signs , comparison is NOT supported


Platforms tested:

Windows 2000 (octopus)
Linux 2.4 (rockaway)
SunOS 5.7 (arabica)
IRIX 6.5 (modi4)


Misc. update: