GActionEntry: improve documentation

Document that giving %NULL for the activate handler is supported since
GLib 2.40.  We documented this on GSimpleAction itself (where the
default handler functionality is implemented) but expecting the user to
dig that up is asking a bit much.

Also, add some more explicit documentation about the conditions under
which each field is expected to be filled in.

https://bugzilla.gnome.org/show_bug.cgi?id=732429
GActionEntry: one more docs fix

Hyperlink "GVariant text format".
doc: various improvements

- g_subprocess_launcher_spawn() and spawnv(): there is no other way
  AFAIK to create a GSubprocess from a launcher. So these
  functions are not "convenience helper".

- annotate optional arguments for g_shell_parse_argv().

- other trivial fix

https://bugzilla.gnome.org/show_bug.cgi?id=732357
doc: improve doc of g_file_equal()

A critical message is printed when a parameter of g_file_equal() is not
a GFile. When we read the documentation before this commit, we can think
that passing NULL or another type than GFile is allowed, but it is not
the case.

Another option is to allow NULL parameters. But for consistency with
e.g. g_str_equal(), it's probably better to keep the code as is.

https://bugzilla.gnome.org/show_bug.cgi?id=732357
unicode: Update test data files for unicode 7.0.0

https://bugzilla.gnome.org/show_bug.cgi?id=731929#c2
valgrind.h: Disable Valgrind features on x64 Visual C++ Builds

...so that builds of GLib on x64 Visual C++ can be restored, as the build
fails in line 449 of valgrind.h as it only supports MinGW/GCC for x64
Windows and simply will not build otherwise.  Make the x64 Visual C++
builds compile again by defining NVALGRIND when GLib is being built for
Windows on x64 Visual C++.

https://bugzilla.gnome.org/show_bug.cgi?id=732465
glib: Fix make dist
MSVC 2012/2013 Support: Update Property Sheet Creation

Be a bit more careful when copying and updating the property sheets, so that
we don't accidently change fields with '10' in them that are actually not
indicating the Visual Studio version.
Updated Galician translations
Fix old wiki links
doc: improve doc of g_subprocess_wait()

When using this API, I wasn't sure what the cancellable does. I think
it's generally desirable to kill the subprocess if the wait operation is
cancelled, since in this case the application is no longer interested by
the subprocess.

https://bugzilla.gnome.org/show_bug.cgi?id=732704
doc: improve doc of g_input_stream_read()

I recently needed to nul-terminate the returned buffer, and I wasn't
sure if g_input_stream_read() does that or not. I've checked
glocalfileinputstream.c, which calls read(2) which doesn't nul-terminate
the buffer. So I assume it's the same behavior for all GInputStream
subclasses.

https://bugzilla.gnome.org/show_bug.cgi?id=732704
doc: small improvement and fixes

- Add an example to g_strsplit(), like it is done for g_strsplit_set().

- GTK-Doc generates a list if a "1." is at the beginning of a line.

https://bugzilla.gnome.org/show_bug.cgi?id=732704
Updated Lithuanian translation
Fix typo
ginetsocketaddress: Explicitly initialise flags for getaddrinfo()

This is not a functional change, as the hints field is static and hence
automatically initialised to zero — which happens to be what AF_UNSPEC
and the unspecified protocol are defined as. However, it’s best to be
explicit about this, in case AF_UNSPEC is _not_ defined as zero.

https://bugzilla.gnome.org/show_bug.cgi?id=732739
GApplication: add a "resource base path"

We don't use this for anything inside of GApplication yet, but Gtk is
about to start using it to find various bits of the application (such as
its menus, icons, etc.).

By default, we form the base path from the application ID to end up with
the familiar /org/example/app style.

https://bugzilla.gnome.org/show_bug.cgi?id=722092
gapplication tests: test resource base path

Run some cases to make sure resource base path is behaving as we expect
it to.

https://bugzilla.gnome.org/show_bug.cgi?id=722092
GDBusMessage: simplify byteswapping

Remove some duplication by simplifying our byteswap checks.

https://bugzilla.gnome.org/show_bug.cgi?id=732754
Added missing "Since:" annotations for g_input_stream_read_bytes() APIs.