files needed by gnu configuration

git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@4160 212acab6-be3b-0410-9dea-997c60f758d6

SCons/Config/memcpy.c

@@ -0,0 +1,11 @@
+#include <stdlib.h> // for size_t
+void *memcpy(void *out, const void *in, size_t len)
+{
+  char *c_out=(char*)out;
+  char *c_in=(char *)in;
+  while (len-- > 0)
+  {
+    *c_out++=*c_in++;
+  }
+  return out;
+}