Permit a PCV with just a icid-value and not trailing semi-colon (fixes #172)
Code review feedback
Comment tweak
Fix typo
Merge pull request #173 from Metaswitch/icid_value_parse_bug

[Reviewer: Andy] Permit a PCV with just a icid-value and not trailing semi-colon (fixes #172)
Merge branch 'master' into sto438