Finished first pass of updating to liquibase 3.0.7, updated to Gradle 1.7
Rolled back change to the 'include' attribute of a DatabaseChangeLog.  We lose the ability to get changeLogs from subdirectories and zip files, but we restore the ability to process files in order
Worked around Liquibase bug CORE-1293, which was corrupting sqlFile checksums
Added descriptions of tasks, created a test file for sqlFile changes and fixed a test