Support for DB2 z/OS
Using DB2zOS for JUnit Category and Maven profile and get the databaseplatform from getDatabaseProductVersion instead of a property
Formatting
Merge remote-tracking branch 'upstream/master' into db2zos

Conflicts:
	flyway-core/src/main/java/org/flywaydb/core/internal/dbsupport/DbSupportFactory.java
Changed custom properties
Merge remote-tracking branch 'upstream/master' into db2zos

Conflicts:
	flyway-core/pom.xml
Merge pull request #713 from cteig/db2zos

Support for DB2 z/OS #638