Did more reworking on easy's structures.  Prepare for major
refactoring using lua's prototype object system and methods.  Looking
into rrthomas's `stdlib', might need to do it from scratch due to
seeming lack of 'require' mechanism.

Added and renamed log functions.  This file will likely be renamed
'debug' or something similar later.  Possibly will split it into two
files, one being debug.  That actually sounds better.  Yup.

 On branch master

	modified:   6/easy
	modified:   6/log