(Filling): Update arguments of fill-paragraph.

fill-paragraph operates on the active region in Transient Mark mode.
Remove fill-paragraph-or-region.

doc/lispref/ChangeLog

+2007-10-17  Juri Linkov  <juri@jurta.org>
+
+	* text.texi (Filling): Update arguments of fill-paragraph.
+	fill-paragraph operates on the active region in Transient Mark mode.
+	Remove fill-paragraph-or-region.
+
 2007-10-13  Karl Berry  <karl@gnu.org>
 
 	* elisp.texi (@dircategory): Move to after @copying,

doc/lispref/text.texi

@@ -1432,11 +1432,14 @@ as @code{full}.
   When you call the filling functions interactively, using a prefix
 argument implies the value @code{full} for @var{justify}.
 
-@deffn Command fill-paragraph justify
+@deffn Command fill-paragraph &optional justify region
 This command fills the paragraph at or after point.  If
 @var{justify} is non-@code{nil}, each line is justified as well.
 It uses the ordinary paragraph motion commands to find paragraph
 boundaries.  @xref{Paragraphs,,, emacs, The GNU Emacs Manual}.
+Interactively, when @var{region} is non-@code{nil} in Transient Mark
+mode and the mark is active, this command calls @code{fill-region}
+on the active region.
 @end deffn
 
 @deffn Command fill-region start end &optional justify nosqueeze to-eop
@@ -1453,12 +1456,6 @@ The variable @code{paragraph-separate} controls how to distinguish
 paragraphs.  @xref{Standard Regexps}.
 @end deffn
 
-@deffn Command fill-paragraph-or-region justify
-In Transient Mark mode, when the mark is active, this command calls
-@code{fill-region} on the active region.  Otherwise, it calls
-@code{fill-paragraph}.
-@end deffn
-
 @deffn Command fill-individual-paragraphs start end &optional justify citation-regexp
 This command fills each paragraph in the region according to its
 individual fill prefix.  Thus, if the lines of a paragraph were indented