flashv2 tweaks

[Jonathan Larmour]

Another chunk to bring some eCosCentric changes in, this time to io/flash 
in the flashv2 branch. While it's not all our changes by a long way, it 
reduces some otherwise important divergence. Since the flashv2 branch isn't 
mainstream, I think it's ok to just put the ChangeLogs in at the time the 
changes were truly written, and reflects the copyright dates.

Jifl
-- 
eCosCentric    http://www.eCosCentric.com/    The eCos and RedBoot experts
------["The best things in life aren't things."]------      Opinions==mine
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