New Grammars Compiler (#3915)

* grammars: Update several grammars with compat issues

* [WIP] Add new grammar conversion tools

* Wrap in a Docker script

* Proper Dockerfile support

* Add Javadoc grammar

* Remove NPM package.json

* Remove superfluous test

This is now always checked by the grammars compiler

* Update JSyntax grammar to new submodule

* Approve Javadoc license

* grammars: Remove checked-in dependencies

* grammars: Add regex checks to the compiler

* grammars: Point Oz to its actual submodule

* grammars: Refactor compiler to group errors by repo

* grammars: Cleanups to error reporting

script/add-grammar

@@ -84,13 +84,13 @@ if repo_old
   log "Deregistering: #{repo_old}"
   `git submodule deinit #{repo_old}`
   `git rm -rf #{repo_old}`
-  `script/convert-grammars`
+  `script/grammar-compiler -update`
 end
 
 log "Registering new submodule: #{repo_new}"
 `git submodule add -f #{https} #{repo_new}`
 exit 1 if $?.exitstatus > 0
-`script/convert-grammars --add #{repo_new}`
+`script/grammar-compiler -add #{repo_new}`
 
 log "Confirming license"
 if repo_old