vchoi_fork

[svn-r6532] Purpose:
Bug fix

Description:
test/dtypes failed badly when -O is used.  Trying to recompile test/*
code without -O did not eliminate the errors.  So, the failure is
deep in the hdf5 library.

Solution:
For now, removed '-O' from $PROD_CFLAGS so that enable-production will use
no optimization.  Need to find out what exactly trigger the errors.

Platforms tested:
Did not do h5committest because this is an AIX configure change only.
Tested it in Copper.  Need to test it on other offsite machines.

Misc. update:
Updated release_docs/RELEASE.