ps: now made responsive to 32 or 64-bit address widths

ps: now made responsive to 32 or 64-bit address widths

While a Debian bug report referenced below was limited
to the 'eip' and 'esp' fields, this patch also extends
address width adaptations to some other addresses too.

[ and, we do so in a far less invasive manner than a ]
[ redhat approach shown below adding two new fields! ]

Reference(s):
. new debian bug report
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=846361
. old redhat solution
https://bugzilla.redhat.com/show_bug.cgi?id=244152

Signed-off-by: Jim Warner <james.warner@comcast.net>