Increased tolerance in oes-standard-derivatives test from 2 to 5 on
request from Qualcomm.

This is essentially a bug fix and has therefore been applied to the
1.0.1, 1.0.2 and top-of-tree conformance suites.
Merge pull request #389 from kenrussell/standard-derivatives-tolerance

Increased tolerance in oes-standard-derivatives test from 2 to 5 on