iOS, make linking of LO dependent

Added a flag to remove need for LO in app, this allows faster change
of UI changes.

Change-Id: Iad3be518733cbd3ce092eebab76f8f66e91e579d

ios/LibreOfficeLight/LibreOfficeLight/LibreOfficeKit.mm

@@ -9,16 +9,16 @@
 #include <TargetConditionals.h>
 #define LOK_USE_UNSTABLE_API
 #include <LibreOfficeKit/LibreOfficeKitInit.h>
-
 #include <osl/process.h>
-
 #include <unicode/udata.h>
 #include <unicode/ucnv.h>
 
+//#define NO_LO
+
 // generated by solenv/bin/native-code.py:
+#ifndef NO_LO
 #include "native-code.mm"
 
-
 // Force reference to libreofficekit_hook
 extern "C" __attribute__((used)) void *libreofficekit_hook(const char *);
 static __attribute__((used)) void *(*foop)(const char *) = libreofficekit_hook;
@@ -26,6 +26,7 @@ static __attribute__((used)) void *(*foop)(const char *) = libreofficekit_hook;
 // pointers to our instance
 static LibreOfficeKit* kit;
 static LibreOfficeKitDocument* document;
+#endif
 
 
 
@@ -38,15 +39,19 @@ extern "C" int BridgeLOkit_Init(const char *path)
     strcpy(bufUserPath + strlen(path), "/user");
 
     // Initialize LibreOfficeKit
+#ifndef NO_LO
     if (!kit)
       kit = lok_init_2(path, bufUserPath);
+#endif
     return 0;
 }
 
 int LOkit_open(char *file)
 {
+#ifndef NO_LO
     document = kit->pClass->documentLoad(kit, file);
     document->pClass->initializeForRendering(document, "");
+#endif
     return 0;
 }