Added failing testcase for JPEGImageReader.

Conflicts:
	imageio/imageio-jpeg/src/test/java/com/twelvemonkeys/imageio/plugins/jpeg/JPEGImageReaderTest.java
Fix reading jpeg images where last scanline is higher than the y
source subsampling offset.
TMI-39: Cleanup after merge.

Conflicts:
	imageio/imageio-jpeg/src/test/java/com/twelvemonkeys/imageio/plugins/jpeg/JPEGImageReaderTest.java
Cleanup after merge
Ignoring some more tests.
Ignore some failing tests (could be some missing integration).
Bumped version.