Full recursion on dwarf info entry nodes
lib/ builds in debug mode by default
dwarf_attr extern indentation
Encode DW_AT_decl_{line,file} with LEB128s

Also factor out leb128 printing code in one place
Correctly map LEBs onto DW_FORM_dataN

This also adds support for DW_FORM_data8
Only output formal-params in a function with code