Update URL to oo-diagnostics in docs.

oo-diagnostics has been moved from util to commin/bin.
Github now uses githubusercontent.com to serve some content.
Bug 1123587 - Updated postgresql-8.2 to support OPENSHIFT_POSTGRESQL_DATESTYLE
Merge pull request #5687 from mfojtik/postgresql_82_datestyle

Merged by openshift-bot
Merge pull request #5686 from sajmoon/5662-update-url-in-docs

Merged by openshift-bot