Me post mine? The contents aren't so much an issue as the location, but...
Code:
prefix=/usr
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include
target=x11
gtk_binary_version=2.4.0
gtk_host=i686-pc-linux-gnu
Name: GTK+
Description: GIMP Tool Kit (${target} target)
Version: 2.4.3
Requires: gdk-${target}-2.0 atk
Libs: -L${libdir} -lgtk-${target}-2.0
Cflags: -I${includedir}/gtk-2.0
It comes from the GTK package itself, in my case, gtk+2-2.4.3-i486-1.