Command-line jobConf options in 0.18.3

[Ian Soboroff]

I'm backporting some code I wrote for 0.19.1 to 0.18.3 (long story),  
and I'm finding that when I run a job and try to pass options with -D  
on the command line, that the option values aren't showing up in my  
JobConf.  I logged all the key/value pairs in the JobConf, and the  
option I passed through with -D isn't there.

This worked in 0.19.1... did something change with command-line  
options from 18 to 19?

Thanks,
Ian