Refactor DOI importer for greater reusability.
Refactor EndNote XML importer for reuse.
Refacter PMID importer for reuse.
Refactor RIS importer for reuse.
Add DOI populator.
Add PMID populator.
Fix title in .info for PMID populator.
Add helper function for RIS.
Add RIS populator.
Add new flag from islandora_plupload and fix file handling.
Add convenience function for EndNote XML.
Add EndNote XML populator.
Fix a couple little copy/pasta issues.
module_enable, you silly.
Add missing module_load_include().

Oops. *whistles innocently*
Fix file loading.
Merge pull request #126 from adam-vessey/7.x-LIB-14

Refactor of importers and implementation of "populators".