Rename classes.

Rename classes.

sed -i "s/\<PictureAsset/J2KPictureAsset/g" src/*.{cc,h}
sed -i "s/\<dcp::PictureAsset/dcp::J2KPictureAsset/g" src/*.{cc,h} test/*.{cc,h} tools/*.cc examples/*.cc
sed -i "s/\<MonoPictureAsset/MonoJ2KPictureAsset/g" src/*.{cc,h} tools/*.cc test/*.{cc,h}
sed -i "s/\<dcp::MonoPictureAsset/dcp::MonoJ2KPictureAsset/g" src/*.{cc,h} test/*.{cc,h} tools/*.cc examples/*.cc
sed -i "s/\<StereoPictureAsset/StereoJ2KPictureAsset/g" src/*.{cc,h} tools/*.cc
sed -i "s/\<dcp::StereoPictureAsset/dcp::StereoJ2KPictureAsset/g" src/*.{cc,h} test/*.{cc,h} tools/*.cc examples/*.cc
sed -i "s/\<MonoPictureFrame/MonoJ2KPictureFrame/g" src/*.{cc,h} tools/*.cc test/*.{cc,h}
sed -i "s/\<dcp::MonoPictureFrame/dcp::MonoJ2KPictureFrame/g" src/*.{cc,h} test/*.{cc,h} tools/*.cc examples/*.cc
sed -i "s/\<StereoPictureFrame/StereoJ2KPictureFrame/g" src/*.{cc,h} tools/*.cc
sed -i "s/\<dcp::StereoPictureFrame/dcp::StereoJ2KPictureFrame/g" src/*.{cc,h} test/*.{cc,h} tools/*.cc examples/*.cc