vchoi_fork

[svn-r4782] 
Purpose:
	Feature Add
Description:
	Added support for dumping Group Comments. This involved a
	modification of the DDL as well.
Solution:
	Steal code from h5ls and put it in the h5dump. The ddl.html file was
	updated as normal. And a test was created...
Platforms tested:
	Dangermouse, Modi4, Kelgia