All: Fix a lot of compiler warnings from header files

While reworking build system, header files started to report warnings.

userspace/libraries/LibC/include/sys/select.h

@@ -44,7 +44,7 @@ typedef struct {
 
 #define FD_ZERO(setp) \
 	do { \
-		for (int i = 0; i < FD_SETSIZE / __FD_MASK_SIZE; i++) \
+		for (int i = 0; i < (int)FD_SETSIZE / (int)__FD_MASK_SIZE; i++) \
 			(setp)->__bits[i] = (__fd_mask)0; \
 	} while (0)
 

userspace/libraries/LibC/include/sys/sysmacros.h

@@ -8,10 +8,10 @@ __BEGIN_DECLS
 #define __need_pid_t
 #include <sys/types.h>
 
-#define makedev(maj, min) ((dev_t)(maj) << 32 | (dev_t)(min))
+#define makedev(maj, min) ((dev_t)(maj) << 16 | (dev_t)(min))
 
-#define major(dev) (((dev) >> 32) & 0xFFFFFFFF)
-#define minor(dev) ( (dev)        & 0xFFFFFFFF)
+#define major(dev) (((dev) >> 16) & 0xFFFF)
+#define minor(dev) ( (dev)        & 0xFFFF)
 
 __END_DECLS
 

userspace/libraries/LibC/include/sys/types.h

@@ -74,7 +74,7 @@ __BEGIN_DECLS
 
 #if !defined(__dev_t_defined) && (defined(__need_all_types) || defined(__need_dev_t))
 	#define __dev_t_defined 1
-	typedef unsigned long dev_t;
+	typedef unsigned int dev_t;
 #endif
 #undef __need_dev_t