File _patchinfo of Package patchinfo

<patchinfo>
  <packager>namtrac</packager>
  <category>recommended</category>
  <rating>low</rating>
  <summary>cairo: fix memory leak</summary>
  <description>This update fixes the following issue with cairo:
- bnc#824538: Add cairo-xlib-memleak.patch to fix a memory leak</description>
  <issue tracker="bnc" id="824538">Fix memory leak in cairo</issue>
</patchinfo>