* Fixed decoding to System.Drawing.Image for single component textures
* Improved exception throwing
* Removed unused ProgressWatch class
* Sanity check for seeking to a negative offset, gracefully handle
* Small speed improvement to the inverse wavelet transform by using Buffer.BlockCopy() and avoiding extra typecasts
git-svn-id: http://libopenmetaverse.googlecode.com/svn/libopenmetaverse/trunk@3412 52acb1d6-8a22-11de-b505-999d5b087335