getopt: merge from gnulib: don't use `...' quotes

I'm not sure whether this is official GNU style now, but `...' quotes
haven't looked properly balanced in most people's terminal fonts since
2001ish? and gnulib has chosen to switch over to '...' quotes.
I'm merging this separately from the other changes in gnulib because
it's very mechanical.

	* posix/getopt.c, posix/getopt.h, posix/getopt1.c, posix/getopt_int.h:
	Use '...' instead of `...' for quotation marks inside
	comments and strings.

1 files changed, 7 insertions, 7 deletions

diff --git a/posix/getopt_int.h b/posix/getopt_int.h
index 71b9655549..ac6ddefac3 100644
--- a/posix/getopt_int.h
+++ b/posix/getopt_int.h
@@ -62,7 +62,7 @@ struct _getopt_data
      stop option processing when the first non-option is seen.
      This is what Unix does.
      This mode of operation is selected by either setting the environment
-     variable POSIXLY_CORRECT, or using `+' as the first character
+     variable POSIXLY_CORRECT, or using '+' as the first character
      of the list of option characters.
 
      PERMUTE is the default.  We permute the contents of ARGV as we
@@ -74,12 +74,12 @@ struct _getopt_data
      written to expect options and other ARGV-elements in any order
      and that care about the ordering of the two.  We describe each
      non-option ARGV-element as if it were the argument of an option
-     with character code 1.  Using `-' as the first character of the
+     with character code 1.  Using '-' as the first character of the
      list of option characters selects this mode of operation.
 
-     The special argument `--' forces an end of option-scanning regardless
-     of the value of `ordering'.  In the case of RETURN_IN_ORDER, only
-     `--' can cause `getopt' to return -1 with `optind' != ARGC.  */
+     The special argument '--' forces an end of option-scanning regardless
+     of the value of 'ordering'.  In the case of RETURN_IN_ORDER, only
+     '--' can cause 'getopt' to return -1 with 'optind' != ARGC.  */
 
   enum
     {
@@ -93,8 +93,8 @@ struct _getopt_data
   /* Handle permutation of arguments.  */
 
   /* Describe the part of ARGV that contains non-options that have
-     been skipped.  `first_nonopt' is the index in ARGV of the first
-     of them; `last_nonopt' is the index after the last of them.  */
+     been skipped.  'first_nonopt' is the index in ARGV of the first
+     of them; 'last_nonopt' is the index after the last of them.  */
 
   int __first_nonopt;
   int __last_nonopt;