A simple shell program to log memory usage of a process.

Usage: ./memlog.sh <cmd> [<params>]

This will run the command '<cmd> [<params>]' and will log memory
usage once per second of the <cmd> process.  The log will be written
to ./<cmd>.log and has the format:

   YYYYMMDD HH:MM:SS|<RSS> <VSIZE>

where the RSS is the resident memory size in 1k blocks and VSIZE
is the size of memory used in the virtual address space (1K blocks).

The accompanying test.py program is a small python program that 
uses increasing memory and then frees the memory.  You should see
the increase and decrease in the python.log file when you do:

   ./memlog.sh python test.py

The test program runs for about 40 seconds.