Renamed the memory_mapper in preparation for the rewrite.
I started adding the new world memory segments.
Merge branch 'logging' into memory_mapper
Merge branch 'master' into memory_mapper
No longer tracking autom4te cache.
Added NoMBC and MBC1 logic. Still needs constructors.
Added the basis for the MBC constructors.
Added the new world memory mapper.
Merge branch 'master' into memory_mapper
Merge branch 'memory_mapper' into mbc

Conflicts:
	back_end/memory/memory_segment.cc
	back_end/memory/memory_segment.h
Moved mapper back.
Merge branch 'master' into memory_mapper

Conflicts:
	back_end/memory/memory_mapper.cc
	back_end/memory/memory_mapper.h
Merge branch 'memory_mapper' into mbc
Added the constructors.
Merge branch 'master' into memory_mapper
Merge branch 'memory_mapper' into mbc
Integrated the context object and the memory mapper into the executor and handlers.
Created a default constructor for memory mapper.
Merge branch 'memory_mapper' into mbc
Updated the test harness.