Added a deprecation warning when using BUILD_WITH_GEO_LIBRARIES or installing pygdal

test/run-deps

@@ -23,6 +23,13 @@ testGEOS() {
   assertCapturedSuccess
 }
 
+testGEOSDeprecation() {
+  export BUILD_WITH_GEO_LIBRARIES=1
+  compile "geos"
+  assertCaptured "The GDAL, GEOS and PROJ binaries and BUILD_WITH_GEO_LIBRARIES functionality are now deprecated."
+  assertCapturedSuccess
+}
+
 testNLTK() {
   # NOTE: This is a RuntimeWarning emitted by Python 3's runpy.py script
   # which is what is used when you call `python -m <module>`. This is due to