Updated SCIFIOMetadataTools

Removed varags params, added better javadoc, and reduced code repetition
by delegating to a pre-existing FormatTools method.
Removed unnecessary method from FormatTools

Removed a setDimensionOrder method from FormatTools. It is not necessary
now that ImageMetadata decoupled its axis type and length arrays.
Added Dicom support to SCIFIO

Converted the loci.formats DicomReader to SCIFIO components. See
ome.scifio.formats.DicomFormat. The loci.formats DicomReader has been
converted to a delegator and marked deprecated.

Necessary supporting classes were also migrated:
JPEG2000Codec
PackBitsCodec
JAIIIOService + Impl

These classes will not be converted to delegators until all SCIFIO
formats are converted (at which time they will move to loci-legacy).

As the JAIIIOService classes were moved to SCIFIO, the
MissingJAIIIOService test was also moved to SCIFIO, as the dependency of
scifio on scifio-devel would cause this test to always fail if it
remained.