Exiv2

This release adds read and write support for Samsung SRW images and Samsung makernotes. The exiv2 library now accepts a custom error handler and has a setting to control which messages are generated. The exiv2 command line tool has a new "quiet" option which uses the new functionality to suppress all library warnings. Important API changes will allow many future image format and makernote enhancements to be done in a binary compatible fashion and the new exiv2.hpp umbrella header file further shields applications from library changes.