Scripts and documentation of the release process

This was used for the 3.0.0 release.

It's ideal that this re-introduces ruby back into the repo (the same scripts could
probably be done with Groovy) but this is a good first strawman.
Merge pull request #285 from dbfit/releasing-docs-and-scripts

Scripts and documentation of the release process
Added DB2 installer to provisioning
Correct title Oracle -> DB2
Correct flags on rm of installation package files
Correctly set passwd for dftest OS user
Whitespace reformat
Of fixtures which are dealing with database statements execution
Succeed early if detect an existing db2inst1 installed instance
Bump up gradle to 1.12
Merge pull request #289 from dbfit/whitespace-reformat-some-fixtures

Whitespace reformat
Merge pull request #290 from dbfit/bump-up-gradle-to-1.12

Bump up gradle to 1.12
Close db statements after using them in fixtures
to avoid running out of database resources
close db statements in *Environment implementations
Merge pull request #291 from dbfit/gh-288-explicit-close-of-db-statements-when-done-with-them

Explicitly close database statements when done with them
dos2unix conversion of .java sources
Merge pull request #293 from dbfit/dos2unix-reformatting

Dos2unix reformatting
Refine DB2 installer: use Chef and better detection for existing installation
Add missing last line EOLs and +x on shell scripts
correct chmod +x on shell scripts - from Linux this time
Merge pull request #286 from pmsoftware/master

DB2 installer for dev/test VM