build-aux/texi2dvi: Fix a regular expression.

ChangeLog

+2011-09-02  Guillaume Lazzara  <z@lrde.epita.fr>
+
+	* build-aux/texi2dvi: Fix a regular expression.
+
 2011-09-02  Guillaume Lazzara  <z@lrde.epita.fr>
 
 	* NEWS: List changes for the next release.

build-aux/texi2dvi

@@ -1848,7 +1848,7 @@ input_file_name_decode ()
 
   # If the COMMAND_LINE_FILENAME is not absolute (e.g., --debug.tex),
   # prepend `./' in order to avoid that the tools take it as an option.
-  echo "$command_line_filename" | $EGREP '^(/|[A-z]:/)' >&6 \
+  echo "$command_line_filename" | $EGREP '^(/|[A-Za-z]:/)' >&6 \
   || command_line_filename="./$command_line_filename"
 
   # See if the file exists.  If it doesn't we're in trouble since, even