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/memset.c

@@ -0,0 +1,10 @@
+#include <stdlib.h> // for size_t
+void *memset(void *mem, int c, size_t len)
+{
+  char *p=(char*)mem;
+  while (len-- > 0)
+  {
+    *p++=c;
+  }
+  return mem;
+}