HUFFMAN - Routines for in memory Huffman coding/decoding

huffCompress - huffman compress a byte stream in a memory buffer and output 
		the bit stream into another memory buffer
huffDecompress - decompress a huffman coded bit stream in a memory buffer and 
		output the byte stream into another memory buffer   

Function Prototypes:
int huffCompress(void *inb, void *outb);
int huffDecompress(void *inb, void *outb);

huffCompress:
Input:
inb	buffer holding the input byte stream 
Output:
outb	buffer holding the output bit stream

huffDecompress:
Input:
inb	buffer holding the input bit stream 
Output:
outb	buffer holding the output byte stream

Notes:
The algorithm is based on that in Mark Nelson's "Data Compression" book.
The compression is performed in memory here.
Author:		Tong Chen, 08/01/94