* add tests to t/mdom/gmake/*.t
* add POD to lib/*.pm
* MDOM::Document::Gmake - rename $context to $inner_context and $saved_context to $outer_context
* add tests to t/mdom/gmake/*.t
* add POD to lib/*.pm
* MDOM::Document::Gmake - rename $context to $inner_context and $saved_context to $outer_context