Fix open_dynamic_library for Android

platform/android/os_android.cpp

@@ -48,6 +48,8 @@
 #include "file_access_jandroid.h"
 #endif
 
+#include <dlfcn.h>
+
 class AndroidLogger : public Logger {
 public:
 	virtual void logv(const char *p_format, va_list p_list, bool p_err) {
@@ -173,6 +175,15 @@ void OS_Android::alert(const String &p_alert, const String &p_title) {
 		alert_func(p_alert, p_title);
 }
 
+Error OS_Android::open_dynamic_library(const String p_path, void *&p_library_handle, bool p_also_set_library_path) {
+	p_library_handle = dlopen(p_path.utf8().get_data(), RTLD_NOW);
+	if (!p_library_handle) {
+		ERR_EXPLAIN("Can't open dynamic library: " + p_path + ". Error: " + dlerror());
+		ERR_FAIL_V(ERR_CANT_OPEN);
+	}
+	return OK;
+}
+
 void OS_Android::set_mouse_show(bool p_show) {
 
 	//android has no mouse...

platform/android/os_android.h

@@ -159,6 +159,8 @@ public:
 
 	virtual void alert(const String &p_alert, const String &p_title = "ALERT!");
 
+	virtual Error open_dynamic_library(const String p_path, void *&p_library_handle, bool p_also_set_library_path = false);
+
 	virtual void set_mouse_show(bool p_show);
 	virtual void set_mouse_grab(bool p_grab);
 	virtual bool is_mouse_grab_enabled() const;