source file headers

[Kevan Miller <ke...@gmail.com>]

There are some problems in the source file headers that have been  
used, so far. The text of the source file headers for the ASF is  
defined here:

http://www.apache.org/legal/src-headers.html#headers

Many files are using the old version of the ASF source file header.  
They will need to be brought up to date. The sooner the better. These  
things tend to get a life of their own...

Also, some of the files contain ASF copyright statements. Only the  
NOTICE file should contain an ASF Copyright.

Some of the files contain an IBM copyright. Neeraj, looks like you  
committed those two (WindowsComputerSystem.java and  
WindowsSystemManager.java). You should be the one to remove the  
copyright (and add the src header).

Finally,