[glabels] (24 commits) ...Merge branch 'zint'

[Jim Evins <jimevins src gnome org>]

Summary of changes:

  b8b660c... Forwardporting changes for zint barcode support (*)
  6220643... Modified Zint support to use rendered data rather than enco (*)
  e1e8039... Alterations to zint rendering (*)
  769479a... Updating for Zint strings and fixed dimensions (*)
  65dd243... Minor alteration for GS1-128 length@ (*)
  f3219c0... Provides barcode even if invalid for correct sizing (*)
  9d21b20... Adding Robin's changes for latest Zint (*)
  a3fd97c... Getting GS1-128 to behave as expected (*)
  e9f492c... Using regexp to remove white space from text instead of det (*)
  8b662f5... Freeing memory in xml and adding poor mans kerning to bc-zi (*)
  dd0b78b... Fix for batch output (*)
  7e6b543... Revert "Fix for batch output" (*)
  f2ced22... Fixed width behavior of object editor. (*)
  e43f639... Added new barcode drawing primitives. (*)
  61aa9b8... Update po files to allow me to push this branch. (*)
  b012b9c... Improved centering of barcode text. (*)
  6717882... Refactoring of barcode structure. (*)
  b586524... More refactoring of barcode subsystem. (*)
  2e156f6... Cleanup zint backend settings and flags. (*)
  2ef27d0... Added support for Maxicode barcodes using the libzint backe (*)
  a6f3364... Allow user selection of barcode backend. (*)
  a8d633c...     Encapsulate barcode style in single struct. (*)
  e681454... Fix maximum size of object editor sidebar at initialization (*)
  6c9d844... Merge branch 'zint'

(*) This commit already existed in another branch; no separate mail sent