[libfortran,committed] Move struct unix_stream back from unix.h to unix.c

diff --git a/libgfortran/io/inquire.c b/libgfortran/io/inquire.c
index c4994ed..24481cc 100644
--- a/libgfortran/io/inquire.c
+++ b/libgfortran/io/inquire.c
@@ -73,7 +73,7 @@  inquire_via_unit (st_parameter_inquire *iqp, gfc_unit * u)
 	  || u->unit_number == options.stdout_unit
 	  || u->unit_number == options.stderr_unit)
 	{
-	  char * tmp = ttyname (((unix_stream *) u->s)->fd);
+	  char * tmp = stream_ttyname (u->s);
 	  if (tmp != NULL)
 	    {
 	      int tmplen = strlen (tmp);
diff --git a/libgfortran/io/unix.c b/libgfortran/io/unix.c
index d3def10..e55af18 100644
--- a/libgfortran/io/unix.c
+++ b/libgfortran/io/unix.c
@@ -167,6 +167,27 @@  fallback_access (const char *path, int mode)
 
 static const int BUFFER_SIZE = 8192;
 
+typedef struct
+{
+  stream st;
+
+  gfc_offset buffer_offset;	/* File offset of the start of the buffer */
+  gfc_offset physical_offset;	/* Current physical file offset */
+  gfc_offset logical_offset;	/* Current logical file offset */
+  gfc_offset file_length;	/* Length of the file, -1 if not seekable. */
+
+  char *buffer;                 /* Pointer to the buffer.  */
+  int fd;                       /* The POSIX file descriptor.  */
+
+  int active;			/* Length of valid bytes in the buffer */
+
+  int ndirty;			/* Dirty bytes starting at buffer_offset */
+
+  int special_file;		/* =1 if the fd refers to a special file */
+}
+unix_stream;
+
+
 /* fix_fd()-- Given a file descriptor, make sure it is not one of the
  * standard descriptors, returning a non-standard descriptor.  If the
  * user specifies that system errors should go to standard output,
@@ -1786,14 +1807,18 @@  stream_isatty (stream *s)
 }
 
 char *
-stream_ttyname (stream *s __attribute__ ((unused)))
-{
 #ifdef HAVE_TTYNAME
+stream_ttyname (stream *s)
+{
   return ttyname (((unix_stream *) s)->fd);
+}
 #else
+stream_ttyname (stream *s __attribute__ ((unused)))
+{
   return NULL;
-#endif
 }
+#endif
+
 
 
 /* How files are stored:  This is an operating-system specific issue,
diff --git a/libgfortran/io/unix.h b/libgfortran/io/unix.h
index 563b77e..0e147aa 100644
--- a/libgfortran/io/unix.h
+++ b/libgfortran/io/unix.h
@@ -42,27 +42,6 @@  struct stream
 };
 
 
-typedef struct
-{
-  stream st;
-
-  gfc_offset buffer_offset;	/* File offset of the start of the buffer */
-  gfc_offset physical_offset;	/* Current physical file offset */
-  gfc_offset logical_offset;	/* Current logical file offset */
-  gfc_offset file_length;	/* Length of the file, -1 if not seekable. */
-
-  char *buffer;                 /* Pointer to the buffer.  */
-  int fd;                       /* The POSIX file descriptor.  */
-
-  int active;			/* Length of valid bytes in the buffer */
-
-  int ndirty;			/* Dirty bytes starting at buffer_offset */
-
-  int special_file;		/* =1 if the fd refers to a special file */
-}
-unix_stream;
-
-
 /* Inline functions for doing file I/O given a stream.  */
 static inline ssize_t
 sread (stream * s, void * buf, ssize_t nbyte)