Bug#503192: Acronym DRM needs expansion to "Direct Rendering Manager"

[Lars Noodén <lars@umich.edu>]

Package: libdrm2
Version: 2.3.1-2

The acronym DRM shown in the package description for libdrm2 could use
some clarification so that the novice and intermediate users know that
it stands for "Direct Rendering Manager" and is related to OpenGL.

apt-cache search libdrm2 gives a line in which the context of "DRM" is
unclear:

	libdrm2 - Userspace interface to kernel DRM services -- runtime
	libdrm2-dbg - Userspace interface to kernel DRM \
	services -- debugging symbols

The package description is excellent:

	This library implements the userspace interface to the
	kernel DRM services. DRM stands for "Direct Rendering
	Manager", which is the kernelspace portion of the
	"Direct Rendering Infrastructure" (DRI). The DRI is
	currently used on Linux to provide hardware-accelerated
	OpenGL drivers.

	http://packages.debian.org/sid/libdrm2

What can be borrowed from the description and put into the short
description that "apt-cache search" displays something associated with
rendering? (rather than restriction)