Linkify injected class names.
These are usually found when refering to a class template's own name
within the definition without specifying the type parameters on
the template.
Merge linkification of injected names. Close #174.
removed Ls from line number fragment
Merge removal of lowercase Ls from line-number fragments. Close #176.

The l looked like a 1 and was confusing people. All-numeric fragments (and anchor-name values) are valid.