Under certain circumstances, reading the /proc/*/map file can
crash the system. Nonexistant objects were not handled correctly.

Clean-up the new VM map procfs code, and also add support for executable
format file "etype". It contains a description of the binary type for
a process.

This file is the "meat" of the process address space capability. If you
would like other things added, just ask!!! It might be pretty easy to add.