* Another big chunk of v4-require-isms
* Allow `#lang framework/keybinding-lang' for keybinding files
* Move hierlist sources into "mrlib/hierlist", leave stub behind
svn: r10689
- class-internal.ss exports two versions (traced/untraced) of macros/functions
- classidmap.ss provides expansion to both forms (traced/untraced)
- class-traced.ss exports traced versions
- class.ss (unchanged) exports untraced versions
- class-events.ss contains hooks called by traced version
Functionality will be used by tool to be released via PLaneT.
svn: r4778