Typo, two tests with the same name.
Ensure we always return a NULL memory pointer on failure from reading
metadata information.  This doesn't fix a bug, it's just sheer paranoia.
Enhance the "unsupported version" error message to include the supported
versions of the build and the version of the file.
Only walk split-merge pages when merging, not regular internal pages.
This avoids a lot of complexity because split-merge pages have never been
reconciled and always contain full keys.
refs #450
Merge branch 'develop' into default-config