Clean up init /proc/cmdline handling.

Helped debug a problem where the N9 bootloader incorrectly
concatenated the various command lines.

Bug: http://b/20906691
Change-Id: I0580b06f4185129c7eedf0bdf74b5ce17f88bf9c
diff --git a/init/init_parser.h b/init/init_parser.h
index 6348607..90f880f 100644
--- a/init/init_parser.h
+++ b/init/init_parser.h
@@ -31,7 +31,7 @@
 void queue_all_property_triggers();
 void queue_builtin_action(int (*func)(int nargs, char **args), const char *name);
 
-int init_parse_config_file(const char *fn);
+bool init_parse_config_file(const char* path);
 int expand_props(char *dst, const char *src, int len);
 
 service* make_exec_oneshot_service(int argc, char** argv);