prefix hash functions with uc_

fix prototype for hashuint

src/ucore_sdmhash.c

@@ -1,5 +1,5 @@
 unsigned long
-sdbmhash(const unsigned char  *str)
+uc_sdbmhash(const unsigned char  *str)
 {
 	unsigned long   hash = 0;
 	unsigned int           c;