Metacat

Beef up exception handling from file utilities. Move UtilException to MetacatUtilException to eliminate conflict with similar exception in utility package.

Do not read or write zero length documents to/from disk

Use only one eml common stylesheet directory for all post 2.0.0 beta versions of eml. Point all eml versions to that directory in skin xml files.

Format indexPaths in metacat.properties. Remove from build.properties and build.xml. Move indexPath list getter from MetacatUtil to SystemUtil.

Replace System.out.println statements with logMetacat statements.

Replace System.out.println statements with logMetacat statements.

Update replication documentation and fix code so that replication log is available.

Separate the concept of a backup file location and a metacat external directory location. These can be totally different.

Fixes include:
-Overwriting existing DTDs on the filesystem if they exist and registration in the DB failed
-only registering a DTD once

do not include the column name when inserting into an auto-increment column