refactored appender from logging to spy package; moved/removed spy.properties to provide correct testing
com.p6spy.engine.logging.P6LogFactory as an optional module
appenders moved from logging to spy package
P6LogOptions module - becomes optional => some of it's options were moved to P6SpyOptions module
adding refactored classes
datasource tests config fixes
Merge pull request #96 from p6spy/spy.log

P6LogOptions becomes optional module; fixes #75