Please describe the problem:
When updating gnome-applets from version <= 2.10 to 2.11.2 (during updating
gnome ) configure doesn't check if gnome-desktop has been updated to a version
>= 2.11.
The compilation fails when linking the mixer applet, which seems to use some
newer  functionality from libgnome-desktop.

Steps to reproduce:
1. install gnome-desktop-2.10.x (or lower)
2. try to compile gnome-applets-2.11.2



Actual results:
i686-pc-linux-gnu-gcc -O2 -march=athlon-xp -mtune=athlon-xp -fomit-frame-pointer
-pipe -o mixer_applet2 applet.o dock.o load.o preferences.o -Wl,--export-dynamic
-Wl,--export-dynamic -Wl,--export-dynamic  /usr/lib/libgstinterfaces-0.8.so
/usr/lib/libgstreamer-0.8.so /usr/lib/libpanel-applet-2.so -pthread
/usr/lib/libgnome-desktop-2.so /usr/lib/libgnomeui-2.so -lSM -lICE
/usr/lib/libstartup-notification-1.so /usr/lib/libbonoboui-2.so
/usr/lib/libxml2.so -lpthread /usr/lib/libgnomecanvas-2.so
/usr/lib/libgnome-2.so /usr/lib/libpopt.so /usr/lib/libart_lgpl_2.so
/usr/lib/libgtk-x11-2.0.so /usr/lib/libgdk-x11-2.0.so /usr/lib/libatk-1.0.so
/usr/lib/libgdk_pixbuf-2.0.so /usr/lib/libpangoxft-1.0.so
/usr/lib/libpangocairo-1.0.so /usr/lib/libpangox-1.0.so
/usr/lib/libpangoft2-1.0.so /usr/lib/libfreetype.so /usr/lib/libcairo.so
/usr/lib/libpango-1.0.so /usr/lib/libgobject-2.0.so /usr/lib/libfontconfig.so
/usr/lib/libpixman.so -lXrender -lX11 -lXext -lpng12 -lz
/usr/lib/libgnomevfs-2.so /usr/lib/libbonobo-2.so /usr/lib/libgconf-2.so
/usr/lib/libbonobo-activation.so /usr/lib/libORBit-2.so -lm
/usr/lib/libgmodule-2.0.so -ldl /usr/lib/libgthread-2.0.so /usr/lib/libglib-2.0.so
applet.o: In function `gnome_volume_applet_run_mixer':
applet.c:(.text+0xad7): undefined reference to
`gnome_desktop_item_new_from_basename'
collect2: ld returned 1 exit status


Expected results:
configure should complain about unmet package requirements

Does this happen every time?
Yes.

Other information:
A fix would be to change line 22122 in the configure script from
LIBGNOME_DESKTOP_REQUIRED=2.10.2
to
LIBGNOME_DESKTOP_REQUIRED=2.11.1