File _patchinfo of Package patchinfo

<patchinfo>
  <issue id="768892" tracker="bnc">rmgdiff doesn't work</issue>
  <category>recommended</category>
  <rating>low</rating>
  <packager>lnussel</packager>
  <description>- make rmgdiff work by setting LC_MESSAGES=POSIX (bnc#768892)
</description>
  <summary>update for mgdiff</summary>
</patchinfo>