a5eb0f2e82
rebased commits: - Added test case for bi-directional OneToOne in YamlExporter - Only inspect joinColumns for owning side in bi-directional OneToOne in YamlExporter - Adding bi-directional test case without joinColumn to XmlExporter test - Same testcase also applied to PhpExporter - Fixing bi-directional issue in PhpExporter when inspecting joinColumns index - Implemented @Ocramius suggestions