Travis AppImage: work around OpenSSL issue

The Qt binaries that we use for the continues build of the AppImage reference
libcrypto.so.1.0.1e, but we bundle libcrypto.so.1.0.0. On distros that have
libcrypto.so.1.0.1e that gets loaded in addition to the one that we bundle
which causes a conflict. More details are explained in the issue below.

Fixes #779

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

.travis.yml

@@ -38,6 +38,7 @@ before_install:
           rm -rf Qt ; mkdir -p Qt/5.9.1 ;
           wget http://subsurface-divelog.org/downloads/Qt-5.9.1.tar.xz ; tar -xJ -C Qt/5.9.1 -f Qt-5.9.1.tar.xz ;
           cd Qt/5.9.1 ; ln -s . gcc_64 ; cd .. ; ln -s 5.9.1/* . ; cd .. ;
+          sed -i -e 's|1.0.1e|1.0.0\x00|g' Qt/lib/libQt5Network.so.5
       fi
       # TestPreferences uses gui calls, so run a xvfb so it has something to talk to
     - "export DISPLAY=:99.0"