try to make acyclic directed graph in make_tree_from_path (renamed from make_hierarchical_nested_dicts_from_paths) in rpmkit.tree
follow rename from .make_hierarchical_nested_dicts_from_paths to make_tree_from_path in rpmkit.tree
follow rename from .make_hierarchical_nested_dicts_from_paths to make_tree_from_path in rpmkit.tree
updateinfo: add gen_depgraph_d3() to generate rpm dependency graph to be rendered w/ d3.js
add for rpm dependency graph in reports