waffle utils: add wflinfo utility

glxinfo for waffle, but using the command line interface
of waffle's gl_basic test.

v2:
 * Various cleanups suggested by Chad
 * Print context flags rather than verifying them.
 * Only print extensions when --verbose is used

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
waffle utils: add Android.mk

This should allow wflinfo to get built for android.

Note: This patch has not been tested.

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
waffle utils: add wflinfo man page

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
.gitignore: ignore generated waffle_feature_test_macros.7.html

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
waffle: add debian packaging

This builds 4 packages:
* libwaffle-1
* libwaffle-dev (pkgconfig, includes)
* libwaffle-doc (man pages)
* waffle-utils (wflinfo w/man page)

Tested with pbuilder for:
* sid amd64
* sid i386

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Cc: Carl Worth <cworth@cworth.org>