Appimage: openssl for ffmpeg (#918), fix rubberband build

(cherry picked from commit 89429755)

packaging/appimage/3rdparty/ext_ffmpeg/CMakeLists.txt

@@ -7,7 +7,7 @@ ExternalProject_Add(
   UPDATE_COMMAND git checkout debian/7%4.3-3
 #  PATCH_COMMAND rm <SOURCE_DIR>/tests/ref/fate/sub-scc
   GIT_TAG debian/master
-  CONFIGURE_COMMAND <SOURCE_DIR>/configure --prefix=${EXT_INSTALL_DIR} --extra-ldflags="-L${EXT_INSTALL_DIR}/lib" --extra-cflags="-I${EXT_INSTALL_DIR}/include" --enable-shared --enable-avfilter --enable-gpl --enable-avresample --enable-libx265 --enable-libvpx --enable-libx264 --disable-doc --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-nvenc --enable-vaapi --enable-amf --enable-libass
+  CONFIGURE_COMMAND <SOURCE_DIR>/configure --prefix=${EXT_INSTALL_DIR} --extra-ldflags="-L${EXT_INSTALL_DIR}/lib" --extra-cflags="-I${EXT_INSTALL_DIR}/include" --enable-shared --enable-avfilter --enable-gpl --enable-avresample --enable-libx265 --enable-libvpx --enable-libx264 --disable-doc --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-nvenc --enable-vaapi --enable-amf --enable-libass --enable-openssl --enable-nonfree
   BUILD_ALWAYS TRUE
   BUILD_IN_SOURCE 1
   BUILD_COMMAND $(MAKE) clean

packaging/appimage/3rdparty/ext_rubberband/CMakeLists.txt

@@ -2,7 +2,7 @@ ExternalProject_Add(
   ext_rubberband
   DOWNLOAD_DIR ${EXT_DOWNLOAD_DIR}
   GIT_REPOSITORY git://github.com/breakfastquay/rubberband.git
-  GIT_TAG default
+  GIT_TAG v1.9 # last version with cmake
   BUILD_IN_SOURCE 1
   CONFIGURE_COMMAND <SOURCE_DIR>/configure --prefix=${EXT_INSTALL_DIR} ${AT_HOST} --disable-programs --disable-vamp --disable-ladspa
   BUILD_COMMAND $(MAKE)