add connection pool to mysql configuration
connection pool size may be specified in configuration
Merge pull request #120 from pradine/master

Switch to IBM JRE 7.1 and Liberty 8.5.5.3
Merge pull request #121 from stopyro/RTC142903

Optionally configure connection pool for mysql / postgresql.
output autoconfig msg and log server xml diff
Merge pull request #122 from svennam92/master

Output autoconfig msg and log server xml diff