work on the plugins. Have a C and C++ 'demo'
Working on plugin framework. Mainly on how to exchange data trough the callback
Changed 'userdata' to ClientData
Moved plugin callback declarations to plugin base class
Use of  'theHost' in workers
Added xml output from a plugin
Merge branch 'plugin_changes' into adding_plugin_documentation
Removing obsolete conversion from roadrunner internal data to c structure
Ran the tests
Adding plugin documentation
Adding pdf as part of the plugin
Added ability to embed plugin documentation as pdf
Added ability to retrieve the pdf from a plugin
Added getting plugin capabilities as xml
Added ability to set parameters by pointers
Many changes to parameters
Started to phase out the use of __stdcall in the C api, need more work on visual studio side