component/zbar, component/zbarlight: Add zbarlight, a python QR code reader library.

component/zbar/buildout.cfg

+[buildout]
+parts=
+  zbar
+
+[zbar]
+recipe = slapos.recipe.cmmi
+url = https://jaist.dl.sourceforge.net/project/zbar/zbar/0.10/zbar-0.10.tar.bz2
+md5sum = 0fd61eb590ac1bab62a77913c8b086a5
+configure-options = 
+  --disable-video
+  --without-imagemagick
+  --without-gtk
+  --without-xv
+  --without-qt
+  --without-python 
+  --without-x
+  --without-jpg
+environment =
+  CFLAGS=

component/zbarlight/buildout.cfg

+[buildout]
+extends =
+  ../pillow/buildout.cfg
+  ../zbar/buildout.cfg
+parts =
+  zbarlight
+
+[zbarlight]
+recipe = zc.recipe.egg:custom
+egg = zbarlight
+include-dirs =
+  ${zbar:location}/include
+library-dirs =
+  ${zbar:location}/lib
+rpath =
+  ${zbar:location}/lib
+depend-eggs = ${pillow-python:egg}