RLE - routines for in memory silence en/decoding

codeSilence - encode the silence pieces of a stream 
codeDesilence	decode the silence encoded stream

Function Prototypes:
void codeSilence (void *inb, void *outb);
void codeDesilence ( void *inb, void *outb);

codeSilence:
Input:
inb	input buffer
Output:
outb	output buffer

codeDesilence:
Input:
inb	input buffer
Output:
outb	output buffer

Author:        Tong Chen