use setreuid() instead of setuid()/seteuid() when dropping root

chdir to / on daemon startup
(both are suggestions by alan cox)


git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@267 fefdeb5f-60dc-0310-8127-8f9354f1896f

polyp/main.c

@@ -259,6 +259,7 @@ int main(int argc, char *argv[]) {
         close(1);
     }
     
+    chdir("/");
 
     pa_log(__FILE__": sizeof(pa_usec_t) = %u\n", sizeof(pa_usec_t));