Removing annoying NativePhpunitTask from phing and use <exec> to call tests. Include target test in target build again.

DDC-684 - Fix flaw in build process, DBAL PEAR package now does not contain Common code and just adds a dependency on the PEAR channel. Additional full package is generated into dist/

Fixed svn dependency in build file and some weird issues where the oci8 driver loses spaces in the sql while transforming positional to named parameters.

[2.0] Added more configuration options that optionally allow to generate PDepend and PHPMD reports and version them by svn revision

[2.0] Refactoring of build.xml to generate coverage xml optionally via build.properties. Also added option to set the phpunit xml configuration file.

[2.0] Updated Build process to use a new PHPUnit Phing Task and seperate "Common" and "Performance" Tests into different executions, the first one halts on failures the second doesnt.

[2.0] Fixed some build issues. Added new build properties. Please install VersionControl_SVN pear package in order to use the test target of the build file.

[2.0] Work on CLI: Added SchemaToolTask with preliminary support for dropping/creating the database schema. Prepared the sandbox. Adjusted build to include the sandbox.

[2.0] Fixed several referential integrity issues. Fixed critical issue with inserts being run twice on postgresql/oracle. Added support for additional tree walkers that modify the AST prior to SQL construction and started to play with it in a testcase.

[2.0] Implemented DQL bulk DELETE support for Class Table Inheritance. Other cleanups, refactorings and docblock additions.