chore: Adjust changelog, about box and welcome message

CHANGELOG

@@ -1,5 +1,27 @@
 # dvdisaster changelog -*-text-*-
  
+0.79.6.1 20-08-2020
+- This is an UNOFFICIAL version, not from the original author,
+  but based on the latest available pre-release, 0.79.6.
+  Changes will be kept minimal (this is not a hard fork),
+  to be able to merge in any new upstream version should it arise.
+  Version numbering will stay 0.79.6.xx, to avoid any confusion
+  if/when a new upstream version appears.
+- Most patches from the Debian maintainer have been applied,
+  up to Debian version 0.79.6-5. Patches that are purely Debian
+  specific have been omitted.
+- This release keeps the debian/ folder untouched,
+- Added support for BDXL-QL (quadruple layer, 128GB)
+- Added support to compile a CLI-only version, without
+  the GTK dependency (only glib2), compile with:
+  $ CLI_ONLY=1 ./configure
+  $ make clean all
+- A few tweaks and fixes around have been done while massively
+  amending the source files to make the CLI-only version possible.
+  This hopefully removes a few quirks without adding too many.
+
+THE ORIGINAL UPSTREAM CHANGELOG IS KEPT BELOW:
+
 0.79.6 20-11-2017
 - The Verify/Test option will now output dvdisaster version
   numbers always in x.yy.zz format, as the old scheme

help-dialogs.c

@@ -769,10 +769,10 @@ void AboutDialog()
 
 #ifdef MODIFIED_SOURCE
    AboutTextWithLink(vbox, _("\nThis version is <b>not the original</b>. It has been patched\n"
-			     "for Debian to support DVD-ROMs (with and without encryption),"
+			     "for Debian to support DVD-ROMs (with and without encryption),\n"
 			     "and subsequently patched again to support a CLI-only build, among other things.\n\n"
-			     "Please do not bother the original authors of dvdisaster or the Debian maintainer\n"
+			     "Please do not bother the original authors of dvdisaster nor the Debian maintainer\n"
-			     "but submit bugreports against GitHun instead.\n"),
+			     "but submit bugreports against [GitHub] instead.\n"),
 			     "https://github.com/speed47/dvdisaster");
 
 #else

welcome-window.c

@@ -78,8 +78,16 @@ static gboolean expose_cb(GtkWidget *widget, GdkEventExpose *event, gpointer dat
 
 	 Closure->invisibleDash = g_strdup_printf("<span color=\"#%02x%02x%02x\">-</span>",
 						  bg->red>>8, bg->green>>8, bg->blue>>8);
-	 AboutText(box, _("- Added support for BDXL-TL 100GB media"));
+
-	 AboutText(box, _("- Optimized ecc generation when medium was previously read\n"));
+/*
+         AboutText(box, _("- Added support for BDXL-TL 100GB media"));
+         AboutText(box, _("- Optimized ecc generation when medium was previously read\n"));
+*/
+	 AboutText(box, _("<b>Unofficial version.</b>\n\n"
+			  "This is a modified version of the <b>0.79.6-5</b> Debian version,\n"
+			  "which is based on the 0.79.6 pre-release, with some enhancements.\n"
+			  "See the About box and changelog for more information.\n"
+			  "The warning message from the pre-release version is retained below.\n"));
 
 	 AboutText(box, _("<i>Please note:</i>\n"
 			  "This is a <span color=\"#800000\">pre-release</span> for expert users.\n"