revise the definition of multiple basic locks in the code

In all cases this is just a change from two volatile int to one.

src/dirent/__dirent.h

@@ -4,6 +4,6 @@ struct __dirstream
 	off_t tell;
 	int buf_pos;
 	int buf_end;
-	volatile int lock[2];
+	volatile int lock[1];
 	char buf[2048];
 };

src/exit/at_quick_exit.c

@@ -5,7 +5,7 @@
 
 static void (*funcs[COUNT])(void);
 static int count;
-static volatile int lock[2];
+static volatile int lock[1];
 
 void __funcs_on_quick_exit()
 {

src/exit/atexit.c

@@ -13,7 +13,7 @@ static struct fl
 } builtin, *head;
 
 static int slot;
-static volatile int lock[2];
+static volatile int lock[1];
 
 void __funcs_on_exit()
 {

src/internal/pthread_impl.h

@@ -39,8 +39,8 @@ struct pthread {
 	int unblock_cancel;
 	volatile int timer_id;
 	locale_t locale;
-	volatile int killlock[2];
+	volatile int killlock[1];
-	volatile int exitlock[2];
+	volatile int exitlock[1];
 	volatile int startlock[2];
 	unsigned long sigmask[_NSIG/8/sizeof(long)];
 	char *dlerror_buf;

src/locale/dcngettext.c

@@ -34,7 +34,7 @@ static char *gettextdir(const char *domainname, size_t *dirlen)
 
 char *bindtextdomain(const char *domainname, const char *dirname)
 {
-	static volatile int lock[2];
+	static volatile int lock[1];
 	struct binding *p, *q;
 
 	if (!domainname) return 0;

src/locale/locale_map.c

@@ -26,7 +26,7 @@ static const char envvars[][12] = {
 
 const struct __locale_map *__get_locale(int cat, const char *val)
 {
-	static volatile int lock[2];
+	static volatile int lock[1];
 	static void *volatile loc_head;
 	const struct __locale_map *p;
 	struct __locale_map *new = 0;

src/locale/setlocale.c

@@ -21,7 +21,7 @@ char *__strchrnul(const char *, int);
 
 char *setlocale(int cat, const char *name)
 {
-	static volatile int lock[2];
+	static volatile int lock[1];
 
 	if ((unsigned)cat > LC_ALL) return 0;
 

src/malloc/lite_malloc.c

@@ -11,7 +11,7 @@ void *__expand_heap(size_t *);
 static void *__simple_malloc(size_t n)
 {
 	static char *cur, *end;
-	static volatile int lock[2];
+	static volatile int lock[1];
 	size_t align=1, pad;
 	void *p;
 

src/misc/syslog.c

@@ -11,7 +11,7 @@
 #include <fcntl.h>
 #include "libc.h"
 
-static volatile int lock[2];
+static volatile int lock[1];
 static char log_ident[32];
 static int log_opt;
 static int log_facility = LOG_USER;

src/prng/random.c

@@ -22,7 +22,7 @@ static int n = 31;
 static int i = 3;
 static int j = 0;
 static uint32_t *x = init+1;
-static volatile int lock[2];
+static volatile int lock[1];
 
 static uint32_t lcg31(uint32_t x) {
 	return (1103515245*x + 12345) & 0x7fffffff;

src/stdio/ofl.c

@@ -2,7 +2,7 @@
 #include "libc.h"
 
 static FILE *ofl_head;
-static volatile int ofl_lock[2];
+static volatile int ofl_lock[1];
 
 FILE **__ofl_lock()
 {

src/thread/pthread_atfork.c

@@ -8,7 +8,7 @@ static struct atfork_funcs {
 	struct atfork_funcs *prev, *next;
 } *funcs;
 
-static volatile int lock[2];
+static volatile int lock[1];
 
 void __fork_handler(int who)
 {

src/thread/sem_open.c

@@ -20,7 +20,7 @@ static struct {
 	sem_t *sem;
 	int refcnt;
 } *semtab;
-static volatile int lock[2];
+static volatile int lock[1];
 
 #define FLAGS (O_RDWR|O_NOFOLLOW|O_CLOEXEC|O_NONBLOCK)
 

src/thread/synccall.c

@@ -14,7 +14,7 @@ static struct chain {
 	sem_t target_sem, caller_sem;
 } *volatile head;
 
-static volatile int synccall_lock[2];
+static volatile int synccall_lock[1];
 static volatile int target_tid;
 static void (*callback)(void *), *context;
 static volatile int dummy = 0;

src/time/__tz.c

@@ -27,7 +27,7 @@ static char old_tz_buf[32];
 static char *old_tz = old_tz_buf;
 static size_t old_tz_size = sizeof old_tz_buf;
 
-static volatile int lock[2];
+static volatile int lock[1];
 
 static int getint(const char **p)
 {