Some comments removed, some added.
All printing functions made available from outside. (instead of module_ only)
Minor printing changes: \n at the end of output and top level metadata printing
as warning message in comment.
Fixed star in pointer type (was before, is now after).
Updated TODO list. null as metadata value is allowed.
Commented metadata failing on parsing (metadata.ll)
Workaround to parse optional keywords / attributes in global / function
declarations / definitions.
Section and align information added to definition type.
Attributes group ("#1") are parsed, but are ignored (as metadata are).
Added "fn_attr" and "fn_attr_key"="fn_attr_value" notation for
function attributes.
Toplevel attribute group definition are not lost during parsing anymore.