* README: Incorporate the changes already made by Murray in HEAD.

* macros/cxx.m4: Make use of the new AS_IF() macro, and also improve the portability of the shell code a bit.

* macros/pcre.m4: Ditto.

* macros/misc.m4: New file, introducing a REGEXXER_PKG_PATH_PROG macro which can be used to look for executables that might live in subdirectories indicated by pkg-config output.

* autogen.sh: Some minor shell coding-style improvements.

* configure.ac: Invoke the new REGEXXER_PKG_PATH_PROG macro in order to look for gdk-pixbuf-csource.  Use the new macro to look for gconftool-2 as well.
(AC_CHECK_HEADERS): Remove the tests for sys/types.h, sys/stat.h, umask() and mode_t since they're no longer necessary.
(PKG_CHECK_MODULES): Substitute the GTKMM prefix by PKG (I don't like MM_DEPS as introduced by Murray in HEAD.)  Also, get rid of the libgnomevfsmm dependency.
(REGEXXER_ENABLE_GCONFMM_VALUE_HACK): New preprocessor macro to be inserted into config.h.  This isn't actually used yet, I'll get to that later.

* regexxer.schemas: New file.

* Makefile.am: Add rules taking care of the installation of the GConf schema file.
(dist_schema_DATA): Add regexxer.schemas to the distribution.
(dist_noinst_DATA): Ditto for macros/misc.m4.
(DISTCHECK_CONFIGURE_FLAGS): Include --disable-schemas-install.

* src/Makefile.am: Reflect the substitution of GTKMM by PKG made in configure.ac.
(AM_CPPFLAGS): Use this variable in place of regexxer_CPPFLAGS, because executable-specific CFLAGS is not something regexxer ever intended to use.

* src/main.cc: Get rid of the libgnomevfsmm dependency.  For one thing, the code using it didn't actually work with remote URIs. For another, as of now there's no stable release of this library in sight, no to mention a widely distributed release.

* src/fileio.cc (load_try_encoding): Comment-out the gnomevfs code and replace it with the original Glib::IOChannel code instead.
(save_file): ditto.

* src/filetree.cc (find_recursively): Comment-out and replace with the previous non-gnomevfs code.