Unshift load directory in Rakefile

Mostly for compatibility with RubyMine.
Remove modules & add ECLv2 header
Add rake clean_all task
Re-implement limited module namespacing

Add modules back in to main class & version classfile
just for options, constants, and static methods.
Add classes for circulation desk, MARC line, and MARC bib record
Capitalize call numbers on MarcBibRecord
Create base class structure for KRAD/KNS & MarcEditor support
Fix frame handling method name
Add MARC bib record data object