Don't build svdemo for Android and iOS.

f89296db adds building of svdemo,
this however uses SAL_IMPLEMENT_MAIN from include/sal/main.h --
which specifically can't be built on Android and iOS, hence
we shouldn't build svdemo for those platforms.

Change-Id: I6ce851ece90837112279c89467326b82f7a2070b
Reviewed-on: https://gerrit.libreoffice.org/9391Tested-by: Michael Stahl <mstahl@redhat.com>
Reviewed-by: Michael Stahl <mstahl@redhat.com>

Repository.mk

@@ -118,7 +118,7 @@ $(eval $(call gb_Helper_register_executables,OOO, \
 		unopkg \
 		unopkg_com \
 	) \
-    svdemo \
+	$(if $(filter-out ANDROID IOS,$(OS)),svdemo) \
 ))
 
 $(eval $(call gb_Helper_register_executables_for_install,UREBIN,ure,\

vcl/Module_vcl.mk

@@ -25,7 +25,7 @@ $(eval $(call gb_Module_add_targets,vcl,\
     $(if $(filter DESKTOP,$(BUILD_TYPE)), \
         StaticLibrary_vclmain \
         Executable_ui-previewer) \
-    Executable_svdemo \
+    $(if $(filter-out ANDROID IOS,$(OS)),Executable_svdemo) \
     Library_vclopengl \
 ))