* code_map/draw_microlevel.ml: fix out of bound when move mouse
* tests/ml/parsing/ifdef.ml: basic support
* code_map/flag_visual.ml: misc
* lang_ml/analyze/graph_code_cmt.ml: try support external libs
* commons/Makefile: export .cmt too
* main_codemap.ml: comment
* main_codegraph.ml: comment
* code_map/view_mainmap.ml: more resistant to files not being here
* main_codemap.ml: comment