Fix typos in lib/

Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Closes #9237

lib/libspl/include/atomic.h

@@ -79,7 +79,7 @@ extern void atomic_add_64(volatile uint64_t *, int64_t);
 #endif
 
 /*
- * Substract delta from target
+ * Subtract delta from target
  */
 extern void atomic_sub_8(volatile uint8_t *, int8_t);
 extern void atomic_sub_char(volatile uchar_t *, signed char);
@@ -173,7 +173,7 @@ extern uint64_t atomic_add_64_nv(volatile uint64_t *, int64_t);
 #endif
 
 /*
- * Substract delta from target
+ * Subtract delta from target
  */
 extern uint8_t atomic_sub_8_nv(volatile uint8_t *, int8_t);
 extern uchar_t atomic_sub_char_nv(volatile uchar_t *, signed char);

lib/libspl/include/sys/kstat.h

@@ -82,7 +82,7 @@ typedef struct kstat {
 	void		*ks_data;	/* kstat type-specific data */
 	uint_t		ks_ndata;	/* # of type-specific data records */
 	size_t		ks_data_size;	/* total size of kstat data section */
-	hrtime_t	ks_snaptime;	/* time of last data shapshot */
+	hrtime_t	ks_snaptime;	/* time of last data snapshot */
 	/*
 	 * Fields relevant to kernel only
 	 */

lib/libspl/include/sys/param.h

@@ -37,7 +37,7 @@
  * with smaller units (fragments) only in the last direct block.
  * MAXBSIZE primarily determines the size of buffers in the buffer
  * pool. It may be made larger without any effect on existing
- * file systems; however making it smaller make make some file
+ * file systems; however making it smaller may make some file
  * systems unmountable.
  *
  * Note that the blocked devices are assumed to have DEV_BSIZE

lib/libspl/include/sys/uio.h

@@ -75,7 +75,7 @@ typedef enum xuio_type {
 
 typedef struct uioa_page_s {		/* locked uio_iov state */
 	int	uioa_pfncnt;		/* count of pfn_t(s) in *uioa_ppp */
-	void	**uioa_ppp;		/* page_t or pfn_t arrary */
+	void	**uioa_ppp;		/* page_t or pfn_t array */
 	caddr_t	uioa_base;		/* address base */
 	size_t	uioa_len;		/* span length */
 } uioa_page_t;

lib/libspl/include/sys/vtoc.h

@@ -51,7 +51,7 @@ extern "C" {
  *		v_sanity		returned as VTOC_SANE
  *						if Disk Label was sane
  *		v_sectorsz		returned as 512
- *		v_reserved [all]	retunred as zero
+ *		v_reserved [all]	returned as zero
  *		timestamp [all]		returned as zero
  *
  *	See  dklabel.h, read_vtoc(), and write_vtoc().