[1.2.X] Fixed #14864, #14864 -- ROCIFField didn't accept values starting with...

[1.2.X] Fixed #14864, #14864 -- ROCIFField didn't accept values starting with RO, as it was supposed to, and ROCNPField, ROIBANField, and ROPhoneNumberField didn't handle all EMPTY_VALUES correctly.  Also converted Romanian localflavor doctests to unittests.  We have always been at war with doctests.  Thanks to Idan Gazit.  Backport of [14951].

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14975 bcc190cf-cafb-0310-a4f2-bffc1f526a37