BPMS-1074: Updated sqlServer version and Postgres version
Removed Comment related to DERBY_VERSION as it is not required anymore.
Updated Tomcat 7 Version
BPMS-1087:Adding xsd generation jar
BPMS-1087:Adding castor jars for xsd generation
BAM-109: Upgraded Birt version from 3.7.2 to 4.3.1
CON-974: Upgraded log4j version to support AsyncAppender to avoid deadlocks in logging.
CON-974: Upgraded SLF4J version from 1.4.3 to 1.7.6 to make it compatible with log4j 1.2.17 version.