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.)

coreutils/sort.c

@@ -12,13 +12,6 @@
  * http://www.opengroup.org/onlinepubs/007904975/utilities/sort.html
  */
 
-#include <ctype.h>
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
 #include "busybox.h"
 
 static int global_flags;
@@ -104,7 +97,7 @@ static char *get_key(char *str, struct sort_key *key, int flags)
 	}
 	/* Make the copy */
 	if(end<start) end=start;
-	str=bb_xstrndup(str+start,end-start);
+	str=xstrndup(str+start,end-start);
 	/* Handle -d */
 	if(flags&FLAG_d) {
 		for(start=end=0;str[end];end++)
@@ -222,7 +215,6 @@ static int compare_keys(const void *xarg, const void *yarg)
 	/* Perform fallback sort if necessary */
 	if(!retval && !(global_flags&FLAG_s))
 			retval=strcmp(*(char **)xarg, *(char **)yarg);
-//dprintf(2,"reverse=%d\n",flags&FLAG_r);
 	return ((flags&FLAG_r)?-1:1)*retval;
 }
 
@@ -242,7 +234,7 @@ int sort_main(int argc, char **argv)
 #ifdef CONFIG_FEATURE_SORT_BIG
 			case 'o':
 				if(outfile) bb_error_msg_and_die("Too many -o.");
-				outfile=bb_xfopen(optarg,"w");
+				outfile=xfopen(optarg,"w");
 				break;
 			case 't':
 				if(key_separator || optarg[1])
@@ -289,7 +281,7 @@ int sort_main(int argc, char **argv)
 	/* Open input files and read data */
 	for(i=argv[optind] ? optind : optind-1;argv[i];i++) {
 		if(i<optind || (*argv[i]=='-' && !argv[i][1])) fp=stdin;
-		else fp=bb_xfopen(argv[i],"r");
+		else fp=xfopen(argv[i],"r");
 		for(;;) {
 			line=GET_LINE(fp);
 			if(!line) break;