Remove bb_ prefixes from xfuncs.c (and a few other places), consolidate
things like xasprintf() into xfuncs.c, remove xprint_file_by_name() (it only
had one user), clean up lots of #includes...  General cleanup pass.  What I've
been doing for the last couple days.

And it conflicts!  I've removed httpd.c from this checkin due to somebody else
touching that file.  It builds for me.  I have to catch a bus.  (Now you know
why I'm looking forward to Mercurial.)
diff --git a/coreutils/ln.c b/coreutils/ln.c
index 54ced0b..df18358 100644
--- a/coreutils/ln.c
+++ b/coreutils/ln.c
@@ -11,10 +11,6 @@
 /* BB_AUDIT GNU options missing: -d, -F, -i, and -v. */
 /* http://www.opengroup.org/onlinepubs/007904975/utilities/ln.html */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
 #include "busybox.h"
 
 #define LN_SYMLINK          1
@@ -45,7 +41,7 @@
 
 	if (argc == optind + 1) {
 		*--argv = last;
-		last = bb_get_last_path_component(bb_xstrdup(last));
+		last = bb_get_last_path_component(xstrdup(last));
 	}
 
 	do {
@@ -55,7 +51,7 @@
 		if (is_directory(src,
 						 (flag & LN_NODEREFERENCE) ^ LN_NODEREFERENCE,
 						 NULL)) {
-			src_name = bb_xstrdup(*argv);
+			src_name = xstrdup(*argv);
 			src = concat_path_file(src, bb_get_last_path_component(src_name));
 			free(src_name);
 			src_name = src;
@@ -69,7 +65,7 @@
 
 		if (flag & LN_BACKUP) {
 				char *backup;
-				backup = bb_xasprintf("%s%s", src, suffix);
+				backup = xasprintf("%s%s", src, suffix);
 				if (rename(src, backup) < 0 && errno != ENOENT) {
 						bb_perror_msg("%s", src);
 						status = EXIT_FAILURE;