Add a script cache to the debugger...

src/utils.cc

Index: src/utils.cc
===================================================================
--- src/utils.cc	(revision 1984)
+++ src/utils.cc	(working copy)
@@ -86,6 +86,20 @@
 }
 
 
+// Thomas Wang, Integer Hash Functions.
+// http://www.concentric.net/~Ttwang/tech/inthash.htm
+uint32_t ComputeIntegerHash(uint32_t key) {
+  uint32_t hash = key;
+  hash = ~hash + (hash << 15);  // hash = (hash << 15) - hash - 1;
+  hash = hash ^ (hash >> 12);
+  hash = hash + (hash << 2);
+  hash = hash ^ (hash >> 4);
+  hash = hash * 2057;  // hash = (hash + (hash << 3)) + (hash << 11);
+  hash = hash ^ (hash >> 16);
+  return hash;
+}
+
+
 void PrintF(const char* format, ...) {
   va_list arguments;
   va_start(arguments, format);