Inlude fontconfig's etc/fonts in macOS app bundle.

Graphviz now uses fontconfig to find its fonts.
Fixes #12370

mac/Info.plist

@@ -7,7 +7,7 @@
     <key>CFBundleExecutable</key>
     <string>Gramps</string>
     <key>CFBundleGetInfoString</key>
-    <string>Gramps-5.1.4-1, (C) 1997-2021 The Gramps Team http://www.gramps-project.org</string>
+    <string>Gramps-5.1.4-2, (C) 1997-2021 The Gramps Team http://www.gramps-project.org</string>
     <key>CFBundleIconFile</key>
     <string>gramps.icns</string>
     <key>CFBundleIdentifier</key>
@@ -17,11 +17,11 @@
     <key>CFBundlePackageType</key>
     <string>APPL</string>
     <key>CFBundleShortVersionString</key>
-    <string>Gramps-5.1.4-1</string>
+    <string>Gramps-5.1.4-2</string>
     <key>CFBundleSignature</key>
     <string>????</string>
     <key>CFBundleVersion</key>
-    <string>Gramps-5.1.4-1</string>
+    <string>Gramps-5.1.4-2</string>
     <key>NSHumanReadableCopyright</key>
     <string>Copyright 1997 - 2021 The Gramps Team, GNU General Public License.</string>
     <key>LSMinimumSystemVersion</key>

mac/gramps.bundle

@@ -141,6 +141,10 @@
     ${project}/gramps_launcher.py
   </data>
 
+  <data>
+    ${prefix}/etc/fonts
+  </data>
+
   <data>
     ${prefix}/share/glib-2.0/schemas
   </data>
@@ -209,6 +213,7 @@
   <data>
     ${prefix}/share/icons
   </data>
+
   <!-- Copy icons. Note that the .icns file is an Apple format which
        contains up to 4 sizes of icon. You can use
        /Developer/Applications/Utilities/Icon Composer.app to import