erased src root package name
Recovered broken format of previous merging with origin/master.
Finalized src name package issue. Root package is NO LONGER src. Every package name begins its own directory name within 'src/' as their root name.
Updated monsters/OUTLINE.
MTDescriptionInterface is added. All descriptions of monsters are moved to there.
monsters/OUTLINE file is updated.
interface name MonsterIndex is replaced to MTIndexInterface. Its index name is also changed. Now all monster index names begin with MTI_ instead of MI_.
interface name MonsterIndex is replaced to MTIndexInterface. Its index name is also changed. Now all monster index names begin with MTI_ instead of MI_.