Update mupdf to use latest openjpeg pulled from ghostpdl.

The OpenJPEG in gs is v2, with various patches for fixes. These are in
the process of being passed upstream. We now automatically pull the
openjpeg tree out of GhostPDL and put it in as one particular branch
in the thirdparty/openjpeg.git repo. Change to track this in MuPDF.

This is in keeping with what we have been doing with the jbig2dec
repo for a while now.

1 files changed, 0 insertions, 0 deletions

diff --git a/thirdparty/openjpeg b/thirdparty/openjpeg
-Subproject d3c8a54c8572b506cb08d767d0c1549bba16217
+Subproject 50c6916741d3fff15cdc282696f1db2f52dee46