*: rename ATTRIBUTE_XXX to just XXX.

diff --git a/shell/msh.c b/shell/msh.c
index 2b6b385..44213c6 100644
--- a/shell/msh.c
+++ b/shell/msh.c
@@ -45,7 +45,7 @@
 # define nonblock_safe_read(fd,buf,count) read(fd,buf,count)
 # define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1])
 # define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1])
-# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
+# define NORETURN __attribute__ ((__noreturn__))
 static int find_applet_by_name(const char *applet)
 {
 	return -1;
@@ -780,7 +780,7 @@
 
 
 /* fail but return to process next command */
-static void fail(void) ATTRIBUTE_NORETURN;
+static void fail(void) NORETURN;
 static void fail(void)
 {
 	longjmp(failpt, 1);
@@ -788,7 +788,7 @@
 }
 
 /* abort shell (or fail in subshell) */
-static void leave(void) ATTRIBUTE_NORETURN;
+static void leave(void) NORETURN;
 static void leave(void)
 {
 	DBGPRINTF(("LEAVE: leave called!\n"));
@@ -1450,7 +1450,7 @@
 	PUSHIO(afile, f, filechar);
 }
 
-static void onintr(int s ATTRIBUTE_UNUSED) /* ANSI C requires a parameter */
+static void onintr(int s UNUSED_PARAM) /* ANSI C requires a parameter */
 {
 	signal(SIGINT, onintr);
 	intr = 1;
@@ -1545,7 +1545,7 @@
  * shell: syntax (C version)
  */
 
-static void yyerror(const char *s) ATTRIBUTE_NORETURN;
+static void yyerror(const char *s) NORETURN;
 static void yyerror(const char *s)
 {
 	yynerrs = 1;
@@ -1558,7 +1558,7 @@
 	fail();
 }
 
-static void zzerr(void) ATTRIBUTE_NORETURN;
+static void zzerr(void) NORETURN;
 static void zzerr(void)
 {
 	yyerror("syntax error");
@@ -3163,7 +3163,7 @@
  * built-in commands: doX
  */
 
-static int dohelp(struct op *t ATTRIBUTE_UNUSED, char **args ATTRIBUTE_UNUSED)
+static int dohelp(struct op *t UNUSED_PARAM, char **args UNUSED_PARAM)
 {
 	int col;
 	const struct builtincmd *x;
@@ -3199,12 +3199,12 @@
 	return EXIT_SUCCESS;
 }
 
-static int dolabel(struct op *t ATTRIBUTE_UNUSED, char **args ATTRIBUTE_UNUSED)
+static int dolabel(struct op *t UNUSED_PARAM, char **args UNUSED_PARAM)
 {
 	return 0;
 }
 
-static int dochdir(struct op *t ATTRIBUTE_UNUSED, char **args)
+static int dochdir(struct op *t UNUSED_PARAM, char **args)
 {
 	const char *cp, *er;
 
@@ -3225,7 +3225,7 @@
 	return 1;
 }
 
-static int doshift(struct op *t ATTRIBUTE_UNUSED, char **args)
+static int doshift(struct op *t UNUSED_PARAM, char **args)
 {
 	int n;
 
@@ -3244,7 +3244,7 @@
 /*
  * execute login and newgrp directly
  */
-static int dologin(struct op *t ATTRIBUTE_UNUSED, char **args)
+static int dologin(struct op *t UNUSED_PARAM, char **args)
 {
 	const char *cp;
 
@@ -3259,7 +3259,7 @@
 	return 1;
 }
 
-static int doumask(struct op *t ATTRIBUTE_UNUSED, char **args)
+static int doumask(struct op *t UNUSED_PARAM, char **args)
 {
 	int i;
 	char *cp;
@@ -3309,7 +3309,7 @@
 	return 1;
 }
 
-static int dodot(struct op *t ATTRIBUTE_UNUSED, char **args)
+static int dodot(struct op *t UNUSED_PARAM, char **args)
 {
 	int i;
 	const char *sp;
@@ -3363,7 +3363,7 @@
 	return -1;
 }
 
-static int dowait(struct op *t ATTRIBUTE_UNUSED, char **args)
+static int dowait(struct op *t UNUSED_PARAM, char **args)
 {
 	int i;
 	char *cp;
@@ -3379,7 +3379,7 @@
 	return 0;
 }
 
-static int doread(struct op *t ATTRIBUTE_UNUSED, char **args)
+static int doread(struct op *t UNUSED_PARAM, char **args)
 {
 	char *cp, **wp;
 	int nb = 0;
@@ -3406,12 +3406,12 @@
 	return nb <= 0;
 }
 
-static int doeval(struct op *t ATTRIBUTE_UNUSED, char **args)
+static int doeval(struct op *t UNUSED_PARAM, char **args)
 {
 	return RUN(awordlist, args + 1, wdchar);
 }
 
-static int dotrap(struct op *t ATTRIBUTE_UNUSED, char **args)
+static int dotrap(struct op *t UNUSED_PARAM, char **args)
 {
 	int n, i;
 	int resetsig;
@@ -3492,12 +3492,12 @@
 	return n * m;
 }
 
-static int dobreak(struct op *t ATTRIBUTE_UNUSED, char **args)
+static int dobreak(struct op *t UNUSED_PARAM, char **args)
 {
 	return brkcontin(args[1], 1);
 }
 
-static int docontinue(struct op *t ATTRIBUTE_UNUSED, char **args)
+static int docontinue(struct op *t UNUSED_PARAM, char **args)
 {
 	return brkcontin(args[1], 0);
 }
@@ -3525,7 +3525,7 @@
 	/* NOTREACHED */
 }
 
-static int doexit(struct op *t ATTRIBUTE_UNUSED, char **args)
+static int doexit(struct op *t UNUSED_PARAM, char **args)
 {
 	char *cp;
 
@@ -3541,13 +3541,13 @@
 	return 0;
 }
 
-static int doexport(struct op *t ATTRIBUTE_UNUSED, char **args)
+static int doexport(struct op *t UNUSED_PARAM, char **args)
 {
 	rdexp(args + 1, export, EXPORT);
 	return 0;
 }
 
-static int doreadonly(struct op *t ATTRIBUTE_UNUSED, char **args)
+static int doreadonly(struct op *t UNUSED_PARAM, char **args)
 {
 	rdexp(args + 1, ronly, RONLY);
 	return 0;
@@ -3583,7 +3583,7 @@
 	err(": bad identifier");
 }
 
-static int doset(struct op *t ATTRIBUTE_UNUSED, char **args)
+static int doset(struct op *t UNUSED_PARAM, char **args)
 {
 	struct var *vp;
 	char *cp;
@@ -3658,7 +3658,7 @@
 #endif
 }
 
-static int dotimes(struct op *t ATTRIBUTE_UNUSED, char **args ATTRIBUTE_UNUSED)
+static int dotimes(struct op *t UNUSED_PARAM, char **args UNUSED_PARAM)
 {
 	struct tms buf;
 	unsigned clk_tck = sysconf(_SC_CLK_TCK);