CMake: use wx prefix in library names

Rename all library targets to start with wx. This way it does not use generic
names like base or core that could interfere with other libraries that add
include the wxWidgets project.

build/cmake/demos/CMakeLists.txt

@@ -56,7 +56,7 @@ function(wx_add_demo name)
     if(wxBUILD_SHARED)
         target_compile_definitions(${DEMO_NAME} PRIVATE WXUSINGDLL)
     endif()
-    wx_exe_link_libraries(${DEMO_NAME} core ${DEMO_LIBRARIES})
+    wx_exe_link_libraries(${DEMO_NAME} wxcore ${DEMO_LIBRARIES})
     wx_set_common_target_properties(${DEMO_NAME})
     set_target_properties(${DEMO_NAME} PROPERTIES FOLDER "Demos")
     set_target_properties(${DEMO_NAME} PROPERTIES
@@ -92,7 +92,7 @@ wx_add_demo(forty
     DATA
         about.htm
     LIBRARIES
-        html xml
+        wxhtml wxxml
     )
 
 wx_add_demo(fractal
@@ -118,7 +118,7 @@ wx_add_demo(poem
     DATA
         wxpoem.txt wxpoem.dat wxpoem.idx
     LIBRARIES
-        html
+        wxhtml
     NAME
         wxpoem
     )