Drop old gallery.

The old gallery has been deprecated for a long while now
and it's replacement has been in core MythTV for several years.

The old gallery uses legacy OpenGL version 1 code for it's effects,
which no longer builds on all platforms.

mythplugins/configure

@@ -272,7 +272,6 @@ check_lib_cxx(){
 PLUGIN_LIST="
 archive
 browser
-gallery
 game
 music
 netvision
@@ -284,7 +283,6 @@ zmserver
 
 DEPRECATED_PLUGIN_LIST="
 flix
-gallery
 "
 
 CONFIG_LIST="
@@ -345,14 +343,6 @@ MythArchive related options:
 MythBrowser related options:
   --enable-mythbrowser     build the mythbrowser plugin [$browser]
 
-MythGallery related options:
-  --enable-mythgallery     build the mythgallery plugin [$gallery]
-  --enable-exif            enable reading of EXIF headers [$exif]
-  --enable-new-exif        use libexif > version 0.6.9 [$newexif]
-  --enable-dcraw           use dcraw to view raw photos [$dcraw]
-  --icc-profile=PROFILE    ICC profile for dcraw decoding [$icc]
-  --enable-opengl          enable OpenGL (MythGallery) [$opengl]
-
 MythGame related options:
   --enable-mythgame        build the mythgame plugin [$game]
 
@@ -632,11 +622,6 @@ if enabled opengl && test "$OPENGLV" != "CONFIG_OPENGL_VIDEO=yes"; then
     disable opengl
 fi
 
-# OpenGL is only used for mythgallery and must not be OpenGL ES!
-if enabled opengl && test "$OPENGLES" = "HAVE_GLES2_GL2_H=yes"; then
-    disable opengl
-fi
-
 #Test if fftw_lib3 is available
 if enabled fftw &&! check_lib2 fftw3.h fftw_init_threads -lfftw3_threads -lfftw3f -lfftw3 ; then
     disable fftw
@@ -804,13 +789,6 @@ else
   echo "        MythBrowser    plugin will not be built"
 fi
 
-if enabled gallery ; then
-  echo "        MythGallery    plugin will be built"
-  echo "SUBDIRS += mythgallery" >> ./config.pro
-else
-  echo "        MythGallery    plugin will not be built"
-fi
-
 if enabled game ; then
   echo "        MythGame       plugin will be built"
   echo "SUBDIRS += mythgame" >> ./config.pro
@@ -864,89 +842,6 @@ else
   echo "        MythZoneMinder plugin will not be built"
 fi
 
-###########################################################
-#                                                         #
-#   MythGallery related configuration options             #
-#                                                         #
-###########################################################
-
-if enabled gallery ; then
-
-    echo "/*" >  ./mythgallery/mythgallery/config.h
-    echo "    Automatically generated by configure - do not modify" >> ./mythgallery/mythgallery/config.h
-    echo "*/" >> ./mythgallery/mythgallery/config.h
-
-    echo "#" > ./mythgallery/config.pro
-    echo "#    Automatically generated by configure - modify only under penalty of death" >> ./mythgallery/config.pro
-    echo "#" >> ./mythgallery/config.pro
-
-    echo "#" > ./mythgallery/mythgallery/config.pro
-    echo "#    Automatically generated by configure - modify only under penalty of death" >> ./mythgallery/mythgallery/config.pro
-    echo "#" >> ./mythgallery/mythgallery/config.pro
-
-    if enabled opengl ; then
-        echo "        OpenGL         support will be included in MythGallery"
-        echo "#define OPENGL_SUPPORT 1" >> ./mythgallery/mythgallery/config.h
-        echo "CONFIG += opengl" >> ./mythgallery/mythgallery/config.pro
-        echo "HEADERS += glsingleview.h" >> ./mythgallery/mythgallery/config.pro
-        echo "SOURCES += glsingleview.cpp" >> ./mythgallery/mythgallery/config.pro
-    else
-        echo "        OpenGL         support will not be included in MythGallery"
-    fi
-
-    if enabled exif ; then
-        echo "        EXIF           support will be included in MythGallery"
-        echo "#define EXIF_SUPPORT 1" >> ./mythgallery/mythgallery/config.h
-        echo "LIBS += -lexif" >> ./mythgallery/mythgallery/config.pro
-
-        if test x`which pkg-config 2>/dev/null` != x"" ; then
-            if `pkg-config --atleast-version 0.6.9 libexif` ; then
-                echo "#define NEW_LIB_EXIF 1" >> \
-                    ./mythgallery/mythgallery/config.h
-            fi
-        else
-            if test x"$newexif" = x"yes" ; then
-                echo "#define NEW_LIB_EXIF 1" >> \
-                    ./mythgallery/mythgallery/config.h
-            else
-                echo
-                echo "Could not determine libexif version, if it is greater"
-                echo "than or equal to 0.6.9 you need to add"
-                echo "--enable-new-exif to the configure flags"
-                echo
-            fi
-        fi
-    else
-        echo "        EXIF           support will not be included in MythGallery"
-    fi
-
-    if enabled dcraw ; then
-        echo "        Dcraw          support will be included in MythGallery"
-        echo "SUBDIRS += dcrawplugin" >> ./mythgallery/config.pro
-        echo "#define DCRAW_SUPPORT 1" >> ./mythgallery/mythgallery/config.h
-        echo "LIBS += -L../dcrawplugin -ldcrawplugin" >> ./mythgallery/mythgallery/config.pro
-        echo "TARGETDEPS += ../dcrawplugin/libdcrawplugin.a" >> ./mythgallery/mythgallery/config.pro
-
-        echo "/*" >  ./mythgallery/dcrawplugin/config.h
-        echo "    Automatically generated by configure - do not modify" >> ./mythgallery/dcrawplugin/config.h
-        echo "*/" >> ./mythgallery/dcrawplugin/config.h
-
-        if enabled exif ; then
-            echo "#define EXIF_SUPPORT 1" >> ./mythgallery/dcrawplugin/config.h
-
-        fi
-
-        if test x"$icc" != x ; then
-            echo "        ICC profile    $icc"
-            # Quote C escape characters.
-            quoted_icc=`echo "$icc" | sed 's/\\([\\\\"?]\\)/\\\\\\1/g;\$!{s/\$/\\\\/}'`
-            echo "#define ICC_PROFILE \"$quoted_icc\"" >> ./mythgallery/dcrawplugin/config.h
-        fi
-    else
-        echo "        Dcraw          support will not be included in MythGallery"
-    fi
-fi
-
 ###########################################################
 #                                                         #
 #   MythGame related configuration options                #