Support alphanumeric+spaces in company_identification

This eliminates company_identification_code_designator. Instead, put what would have been the company_identification_code_designator character at the front of company_identification, where company_identification is a 10 character string of letters, numbers, and spaces.

As in the upstream gem, if the company_identification is only 9 characters, it will prepend a 1. A company_identification less than 9 characters is no longer legal. Please pad on the left with spaces if the company_identification you are working with is too short.

Company Identification Regex Update

• Allows Alphanumeric Company Identification Code