Split uc_human_bytesz in uc_human_bytesz_dec/uc_human_bytesz_bin, for

decimal and binary conversion (http://en.wikipedia.org/wiki/Megabyte)

include/ucore/string.h

@@ -77,11 +77,15 @@ int
 getfields(char *str, char **args, int max, int mflag, const char *set);
 
 //Converts bytes to a human representable test, (i.e. 12kB, 160 MB 1.78 GB etc.)
-//Conversion is done in decimal (base 10 ,1 kB == 1000 bytes)
 ///result should be at least of size 12,
 ///returns the result argument
 char *
-uc_human_bytesz(uint64_t bytes, char *result, size_t result_len);
+uc_human_bytesz_dec(uint64_t bytes, char *result, size_t result_len);
+
+//same as uc_human_bytesz_bin, but Conversion is done in binary 
+//(base 2 ,1 KiB == 1024 bytes)
+char *
+uc_human_bytesz_bin(uint64_t bytes, char *result, size_t result_len);
 #ifdef __cplusplus
 }
 #endif