docs: fix typos found by misspellings

The tool misspellings (https://github.com/lyda/misspell-check)
detected several typos. Command used:

  $ git ls-files | grep -v ^po/ | misspellings -f -

* Documentation/releases/v2.18-ReleaseNotes: Fix typo in news entry.
* NEWS: Likewise.
* config/texinfo.tex: Fix typo in comments.
* libmount/src/context.c: Fix typo in comment.
* libmount/src/fs.c: Likewise.
* login-utils/login.c: Likewise.
* login-utils.su.1: Fix typo in man page.
* sys-utils/chcpu.c: Fix typo in error message.

Signed-off-by: Bernhard Voelker <mail@bernhard-voelker.de>

Documentation/releases/v2.18-ReleaseNotes

@@ -148,7 +148,7 @@ docs:
    - update v2.18 ReleaseNotes  [Karel Zak]
 fallocate:
    - check for number of arguments  [Karel Zak]
-   - support suffixes for --offset and --lenght  [Karel Zak]
+   - support suffixes for --offset and --length  [Karel Zak]
 fdisk:
    - add -c option (switch off DOS mode)  [Karel Zak]
    - cleanup alignment, default to 1MiB offset  [Karel Zak]

NEWS

@@ -1300,7 +1300,7 @@ HIGHLIGHTS for version 2.6:
 
 1) Removed programs:
    - md5sum, dsplit: available in GNU textutils.
-   - syslogd: Sysklogd is now prefered.  It is available at 
+   - syslogd: Sysklogd is now preferred.  It is available at
 	tsx-11.mit.edu:/pub/sources/sbin
 	sunsite.unc.edu:/pub/Linux/system/Daemons
 

config/texinfo.tex

@@ -441,7 +441,7 @@
 % to get _exactly_ the rest of the line, we had to prevent such situation.
 % We prepended an \empty token at the very beginning and we expand it now,
 % just before passing the control to \next.
-% (Similarily, we have to think about #3 of \argcheckspacesY above: it is
+% (Similarly, we have to think about #3 of \argcheckspacesY above: it is
 % either the null string, or it ends with \^^M---thus there is no danger
 % that a pair of braces would be stripped.
 %
@@ -498,7 +498,7 @@
 % used to check whether the current environment is the one expected.
 %
 % Non-false conditionals (@iftex, @ifset) don't fit into this, so they
-% are not treated as enviroments; they don't open a group.  (The
+% are not treated as environments; they don't open a group.  (The
 % implementation of @end takes care not to call \endgroup in this
 % special case.)
 
@@ -6405,7 +6405,7 @@ where each line of input produces a line of output.}
 % In case a @footnote appears in a vbox, save the footnote text and create
 % the real \insert just after the vbox finished.  Otherwise, the insertion
 % would be lost.
-% Similarily, if a @footnote appears inside an alignment, save the footnote
+% Similarly, if a @footnote appears inside an alignment, save the footnote
 % text to a box and make the \insert when a row of the table is finished.
 % And the same can be done for other insert classes.  --kasal, 16nov03.
 

libmount/src/context.c

@@ -1775,7 +1775,7 @@ int mnt_context_fstab_applied(struct libmnt_context *cxt)
  *
  * The real exit code of the mount.type helper has to be tested by
  * mnt_context_get_helper_status(). The mnt_context_get_status() only inform
- * that exec() has been sucessful.
+ * that exec() has been successful.
  *
  * Returns: 1 if mount.type or mount(2) syscall has been successfully called.
  */

libmount/src/fs.c

@@ -873,7 +873,7 @@ const char *mnt_fs_get_attributes(struct libmnt_fs *fs)
  *
  * The atrtributes are managed by libmount in userspace only. It's possible
  * that information stored in userspace will not be available for libmount
- * after CLONE_FS unshare. Be carefull, and don't use attributes if possible.
+ * after CLONE_FS unshare. Be careful, and don't use attributes if possible.
  *
  * Returns: 0 on success or negative number in case of error.
  */

login-utils/login.c

@@ -364,7 +364,7 @@ static void init_tty(struct login_context *cxt)
 	 *
 	 * More precisely, the problem is  ttyn := ttyname(0); ...; chown(ttyn);
 	 * here ttyname() might return "/tmp/x", a hardlink to a pseudotty.
-	 * All of this is a problem only when login is suid, which it isnt.
+	 * All of this is a problem only when login is suid, which it isn't.
 	 */
 	if (!cxt->tty_path || !*cxt->tty_path ||
 	    lstat(cxt->tty_path, &st) != 0 || !S_ISCHR(st.st_mode) ||
@@ -1317,7 +1317,7 @@ int main(int argc, char **argv)
 	/*
 	 * Authentication may be skipped (for example, during krlogin, rlogin,
 	 * etc...), but it doesn't mean that we can skip other account checks.
-	 * The account could be disabled or password expired (althought
+	 * The account could be disabled or password expired (although
 	 * kerberos ticket is valid).         -- kzak@redhat.com (22-Feb-2006)
 	 */
 	loginpam_acct(&cxt);

login-utils/su.1

@@ -16,7 +16,7 @@ defaults to running an interactive shell as
 For backward compatibilty
 .B su
 defaults to not change the current directory and to only set the
-enviroment variables
+environment variables
 .B HOME
 and
 .B SHELL

sys-utils/chcpu.c

@@ -140,11 +140,11 @@ static int cpu_set_dispatch(int mode)
 	if (mode == 0) {
 		if (path_writestr("0", _PATH_SYS_CPU_DISPATCH) == -1)
 			err(EXIT_FAILURE, _("Failed to set horizontal dispatch mode"));
-		printf(_("Succesfully set horizontal dispatching mode\n"));
+		printf(_("Successfully set horizontal dispatching mode\n"));
 	} else {
 		if (path_writestr("1", _PATH_SYS_CPU_DISPATCH) == -1)
 			err(EXIT_FAILURE, _("Failed to set vertical dispatch mode"));
-		printf(_("Succesfully set vertical dispatching mode\n"));
+		printf(_("Successfully set vertical dispatching mode\n"));
 	}
 	return EXIT_SUCCESS;
 }