File _patchinfo of Package patchinfo.799

<patchinfo>
  <packager>gberh</packager>
  <category>recommended</category>
  <rating>low</rating>
  <summary>ristretto: Update to 0.6.3</summary>
  <description>This update fixes the following issues for ristretto:
- update to version 0.6.3
  - use thumbnail as appicon
  - update the first image in the image-list when receiving a ready-signal which is required to show the thumbnail once it's generated
- update to version 0.6.2
  - fix a crash when configuring the 'limit-quality' property
  - translation updates</description>
</patchinfo>