[sphinx] replaced app.registry.add_source_input with direct modification of app.registry.source_inputs
[sphinx] replaced app.registry.add_source_input with direct modification of app.registry.source_inputs

older versions of sphinx (e.g. 1.7.5) do not support the 'override' argument

vovkos/doxyrest,vovkos/doxyrest,vovkos/doxyrest,vovkos/doxyrest,vovkos/doxyrest