CRM-12108 noticed type on 'skipDefault' was wrong
CRM-12108 noticed api.contribution_recur.frequency_interval needs to be mandatory

Conflicts:

	api/v3/ContributionRecur.php
CRM-12108 noticed api.contribution_recur.start_date needs to be set or have a default - am defaulting to now
4.3 backport of payment processor api
backport contribution page api
backport 4.4. exception class