GitLab

 - typos corrected
 - copyright years updated
 - added comments

Trivial change. Commiting on my discretion.

 - lines wrapped to 100 columns (according to our coding guidelines)
 - explained what @3 means in bison
 - created link to wiki page about regenerating parser code
 - added terminology page that explains what CA and D2 are
 - corrected order of the files in Makefile.am

# Conflicts:
#	ChangeLog