Merge pull request #47 from austinhyde/master

Fix xml_composite() warnings and notices about arguments
add rhamilton "Rusty Hamilton" rusty@shrub3.net as contributing developer
DBSteward 1.3.0 Release packaging

* API Updates:
  - Format handler PHP fatals when certain CLI combos are used
  - Data row differencing when pkeys change in the same release
  - Addendum artifact creation mode
  - Allow definitions to contain sqlformat hints for platform specific definitions
* pgsql8 updates:
  - Index quoting fixes
* mysql5 updates:
  - Index and column quoting fixes

Supported Platform DDL Generation and Differencing:
* pgsql8    - PostgreSQL 8
* mssql10   - Microsoft SQL Server 2008
* mysql5    - MySQL 5

Supported Platform Structure Extraction into XML:
* pgsql8    - PostgreSQL 8
* mysql5    - MySQL 5