fix str_hash() for archs enforcing aligned pointers

uses the hashing algorithm from g_str_hash() from glib

fixes #27

daemon/str.c

@@ -2,25 +2,14 @@
 #include <assert.h>
 #include <stdarg.h>
 
+/* adapted from g_str_hash() from glib */
 guint str_hash(gconstpointer ss) {
 	const str *s = ss;
-	guint ret = 0;
+	guint ret = 5381;
 	str it = *s;
 
-	while (it.len >= sizeof(guint)) {
-		guint *x = (void *) it.s;
-		ret ^= *x;
-		it.s += sizeof(guint);
-		it.len -= sizeof(guint);
-	}
-	while (it.len >= sizeof(gushort)) {
-		gushort *x = (void *) it.s;
-		ret ^= *x;
-		it.s += sizeof(gushort);
-		it.len -= sizeof(gushort);
-	}
 	while (it.len > 0) {
-		ret ^= *it.s;
+		ret = (ret << 5) + ret + *it.s;
 		it.s++;
 		it.len--;
 	}