RFC: Add support for SHF_COMPRESSED

[H.J. Lu]

I am working on SHF_COMPRESSED support:

http://www.sco.com/developers/gabi/latest/ch4.sheader.html

We already have .zdebug* sections, which aren't compatible
with SHF_COMPRESSED scheme due to missing compression
header.   What section names should we use for SHF_COMPRESSED
debug sections.  Using .debug* or .zdebug*  will break existing tools.
I am thinking .zlibdebug*  or ..Zdebug*.  Any suggestions?

Thanks.

-- 
H.J.