Fix up reduce to deal with complex as well as ND.	
	
New test using unit testing.

Better documentation.	

Use Python exceptions in mpiext.c
	
Re-introduce optinal length if one wants to communicate less 
than given array (very low priotity)

(See also TODO section in README)

DONE:
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Address 2D arays as per mails (dir: 2D)	- DONE version 1.7
Fix up status object to be returned (depending on optional flag arg)	

Get pypar to work under redhat 7.1 with LAM as per suggestion by Doug Orr
(LAM assumes that last commandline arg is None) See fra_DOUG.husk3.
ALso acknowledge Dave Reed for pointing out the problem. DONE.
Wait for dave reed to acknowledge that it also works under solaris.
DONE in 1.6.5


Also add to doc that pypar needs Numeric (and Python 2.3?) (Already in there)

Fix confusing errmsg when Numeric isn't installed (David Brown)