Adding Crunch at r319.

third_party/crunch/crnlib/crn_huffman_codes.h

@@ -0,0 +1,14 @@
+// File: crn_huffman_codes.h
+// See Copyright Notice and license at the end of inc/crnlib.h
+#pragma once
+
+namespace crnlib
+{
+   const uint cHuffmanMaxSupportedSyms = 8192;
+
+   void* create_generate_huffman_codes_tables();
+   void free_generate_huffman_codes_tables(void* p);
+   
+   bool generate_huffman_codes(void* pContext, uint num_syms, const uint16* pFreq, uint8* pCodesizes, uint& max_code_size, uint& total_freq_ret);
+
+} // namespace crnlib