Handle dumps from 64-bit xlr stacks

Coloring is correct for .text but not for the other sections.

The word width is hardcoded throughout the code. This needs some
significant refactoring to handle switching between 32-bit vxworks and
64-bit mips.
Improve MIPS data section coloring.

All data sections lumped in .data.
Merge branch 'xlr64' into m2
Remove old name stackeval