By INA ALLECO R. SILVERIO Bulatlat.com Manila-Employees of the Philippine Postal Corporation are up in arms against the new administration led by former Bulacan governor Maria Josefina Mendoza de la Cruz over its rationalization program. The two biggest employees union in Philpost, the PhilPost Rank-and-File Employees Association, Inc. (PRAFEA) – Confederation for Unity, Recognition and…