Parameterize crimper holder. Create cuttlefish support.

	* cuttlefish-support.scad: Created.
	* tool-holders/crimper.scad (crimp_block): Parameterize.
	(crimp_support): Likewise.
Merge branch 'master' of github.com:jeremybennett/scad-examples

Conflicts:
	ChangeLog
	tool-holders/crimper.scad