Log Message:
Changes 0.18.2:
* xgettext now understands the block comment syntax of Guile 2.0.
* libgettextpo library:
  - The initial msgstr of a new message is now "", not NULL.
  - Bug fixes in the functions po_message_is_range, po_file_check_all,
    po_message_check_all.
* Installation options:
  The configure options --with-xz and --with-bzip2 can be used to specify
  alternate compression methods for the archive used by the 'autopoint'
  program. These options, together with --with-git, allow to trade
  dependencies against installed package size. --with-xz has the highest
  compression rate, followed by --with-git, followed by --with-bzip2.
* Autoconf macros:
  - The autoconf macros installed by 'gettextize' now work with the
    forthcoming Automake 1.14 and require Autoconf version 2.60 or
    newer.
* Portability:
  - Building on MacOS X 10.7, Cygwin 1.7.10, and newer 64-bit mingw is
    now supported.