Fix typos

Typos found with codespell

src/extract.c

@@ -456,7 +456,7 @@ mark_after_links (struct delayed_set_stat *head)
    members. To help cope with this case the variable
    delay_directory_restore_option is set by prepare_to_extract.
 
-   If an archive was explicitely created so that its member order is
+   If an archive was explicitly created so that its member order is
    reversed, some directory timestamps can be restored incorrectly,
    e.g.:
        tar --no-recursion -cf archive dir dir/file1 foo dir/file2

src/names.c

@@ -395,7 +395,7 @@ handle_file_selection_option (int key, const char *arg)
       break;
 
     case NO_ANCHORED_OPTION:
-      include_anchored = 0; /* Clear the default for comman line args */
+      include_anchored = 0; /* Clear the default for command line args */
       matching_flags &= ~ EXCLUDE_ANCHORED;
       break;
 

src/sparse.c

@@ -1019,7 +1019,7 @@ static struct tar_sparse_optab const star_optab = {
    * 1.0
 
    Starting from this version, the exact sparse format version is specified
-   explicitely in the header using the following variables:
+   explicitly in the header using the following variables:
 
    GNU.sparse.major     Major version
    GNU.sparse.minor     Minor version

src/system.c

@@ -538,7 +538,7 @@ sys_child_open_for_uncompress (void)
       && !_remdev (archive_name_array[0])
       && is_regular_file (archive_name_array[0]))
     {
-      /* We don't need a grandchild tar.  Open the archive and lauch the
+      /* We don't need a grandchild tar.  Open the archive and launch the
 	 uncompressor.  */
 
       archive = open (archive_name_array[0], O_RDONLY | O_BINARY, MODE_RW);

src/tar.c

@@ -889,7 +889,7 @@ enum option_class
   };
 
 /* Table of locations of potentially conflicting options.  Two options can
-   conflict only if they procede from the command line.  Otherwise, options
+   conflict only if they proceed from the command line.  Otherwise, options
    in command line silently override those defined in TAR_OPTIONS. */
 static struct option_locus *option_class[OC_MAX];
 
@@ -2697,7 +2697,7 @@ decode_options (int argc, char **argv)
   if (backup_option)
     {
       backup_type = xget_version ("--backup", args.version_control_string);
-      /* No backup is needed either if explicitely disabled or if
+      /* No backup is needed either if explicitly disabled or if
 	 the extracted files are not being written to disk. */
       if (backup_type == no_backups || EXTRACT_OVER_PIPE)
 	backup_option = false;