lisa.analysis.base: Allow calls to plot methods to override local_fig
lisa.analysis.base: Allow calls to plot methods to override local_fig

This allows a high level plot method to call a low-level one and forward
its own local_fig to the nested plot method.

ARM-software/lisa,credp/lisa,ARM-software/lisa,ARM-software/lisa,credp/lisa,credp/lisa,ARM-software/lisa,credp/lisa