fix a crash when resizing with a dimension to 0 (based on the ImageView dimensions)
Merge pull request #298 from robUx4/fix_resize_crash

fix a crash when resizing with a dimension to 0 (based on the ImageView dimensions)
don't draw the resized bitmap if the source and destination are the same
only allocate the return Bitmap when we know we'll need one
Merge pull request #300 from robUx4/dont_resize_same_size

don't draw the resized bitmap if the source and destination are the same
resize bitmaps to a better quality version (with bilinear filtering)
See this thread http://stackoverflow.com/a/7468636

Conflicts:
	ion/src/com/koushikdutta/ion/DefaultTransform.java
Merge pull request #299 from robUx4/better_resize_quality

resize bitmaps to a better quality version (with bilinear filtering)
Fix concurrent modification error.
https://github.com/koush/ion/issues/244