gtk2mm: Update version from 2.24.0 to 2.24.5

From the [news file][1]:

> 2.24.5 (stable)
>
> This release can be used together with glibmm up to at least 2.49.5.
> It's recommended that you use gtkmm3 instead of gtkmm2. The support for
> gtkmm2 is minimal, and diminishing.
>
> Build:
> * Update the MSVC projects (Chun-wei Fan)
> * Use C++11 if the compiler supports it (Murray Cumming)
> * Update to be compatible with new versions of glibmm
>   (Kjell Ahlstedt, Murray Cumming)
>
> Documentation:
> * Improve the documentation of Gtk::ComboBoxText
>   (Kjell Ahlstedt) Bug #766039 (Omega Phil)

[1]: https://ftp.gnome.org/pub/GNOME/sources/gtkmm/2.24/gtkmm-2.24.5.news

gtk2mm.be0

@@ -1,8 +1,8 @@
 #!/bin/env beesh
 
-# BEE_VERSION gtk2mm-2.24.0-0
+# BEE_VERSION gtk2mm-2.24.5-0
 
-SRCURL[0]="https://ftp.gnome.org/pub/GNOME/sources/gtkmm/${PKGVERSION[2]}/gtkmm-${PKGVERSION}.tar.bz2"
+SRCURL[0]="https://ftp.gnome.org/pub/GNOME/sources/gtkmm/${PKGVERSION[2]}/gtkmm-${PKGVERSION}.tar.xz"
 
 PATCHURL[0]=""
 
@@ -19,7 +19,7 @@ mee_patch() {
 }
 
 mee_configure() {
-    MMDOCTOOLDIR=/usr/share/mm-common/doctool bee_configure
+    bee_configure
 }
 
 mee_build() {