* src/main.cc (RegexxerOptions): New class that implements the
command-line option interface using the option parsing facilities
of glibmm instead of libpopt.
(parse_command_line): Remove old function that used libpopt to
parse command line options.
(main): Use the new option parsing code.  Also, merge the gettext
initialization into a single call again.  The special trickery that
used to bind the codeset separately after option processing is no
longer necessary with the new parser.

* src/mainwindow.{cc,h} (Regexxer::InitState): Reorganize the data
structure so that default-constructed objects equal the default
values of the command-line options.  This is a work-around for
glibmm bug #393571.
(MainWindow::initialize): Adapt to Regexxer::InitState changes.

* src/translation.{cc,h} (Util::enable_utf8_gettext): Merge back
into Util::initialize_gettext(), as the separation is no longer
necessary.
(compose_impl): Optimize a bit by reserving the memory for the
result string in advance.  Also, replace a couple of `...' quotes
with "..." in a warning message.

* Makefile.am (src_regexxer_LDADD): Remove $(POPTLIBS).
* configure.ac (DK_LIB_POPT): Remove check for libpopt.
* m4/dk-popt.m4: Remove now obsolete file.

svn path=/trunk/; revision=603