[LyX/2.1.x] Make the missing class warning opt-out

[Juergen Spitzmueller]

commit c549f11b83a1935f2c20950de64035f03a92e48c
Author: Juergen Spitzmueller <sp...@lyx.org>
Date:   Mon Mar 16 20:34:32 2015 +0100

    Make the missing class warning opt-out

diff --git a/src/BufferParams.cpp b/src/BufferParams.cpp
index abc68c0..4704101 100644
--- a/src/BufferParams.cpp
+++ b/src/BufferParams.cpp
@@ -632,7 +632,7 @@ string BufferParams::readToken(Lexer & lex, string const & 
token,
                                                 "See section 3.1.2.2 (Class 
Availability) of the\n"
                                                 "User's Guide for more 
information."), desc, prereqs);
                        frontend::Alert::warning(_("Document class not 
available"),
-                                      msg);
+                                      msg, true);
                }
        } else if (token == "\\begin_preamble") {
                readPreamble(lex);
diff --git a/status.21x b/status.21x
index 8302b5e..93311ce 100644
--- a/status.21x
+++ b/status.21x
@@ -48,6 +48,9 @@ What's new
 - Fix the profile script used on cygwin to comply with the latest cygwin/X
   X server which, by default, does not anymore listen to tcp connections.
 
+- Add a "Do not show again" checkbox to the warning that is issued when the
+  LaTeX class/packages are missing for a given layout (bug 9420).
+
 
 * DOCUMENTATION AND LOCALIZATION