created DAO class for SPCMeasurement
Create test case for SPC Measurement. Altered persistence.xml so JPA would create a table if it not already exist
Set openJPA logging to log4j
SPCDAO.java:implmented methods update,delete,find and get
Part.java:Added length value for @Column definitions to help openJPA generate the correct database table
TestSPCMeasurment.java, SPCMeasurement.java: Completed testing on table creation and retrieval