Add a target in the install-msvc.mak file that enables one to generate
the translations (.mo) files using msgfmt from the .po catalog files.
Add an entry in config-msvc.mak[.in] so that one can use it to configure
a custom location for the msgfmt.exe program, since it is harder to
install with Visual Studio, so that one can use a prebuilt copy from
Cygwin or MSYS2, for instance.
Generate the full GResource XML files for the Emoji data, and generate
the binary GResource data from them and copy them as appropriate.
At this point, the installed data files are in-line with what the Meson
builds install, sans the processed translation files.
This does what the Meson build files also do, so that people can have
the m4 module, the ITS files as RelaxNG files if they choose to use them
anyways.
This is an NMake Makefile that will replace the property sheets in the
Visual Studio project files so that we can call it from the project
files to "install" the binaries and introspection files that were built,
along with the header files and other data files, which aims to be
easier to maintain for the current approach.
This will also be expanded upon to optionally build the translation
files and make the installed files more in-line with what are done in
the Meson build files, where there could be compatibility problems with
older Visual Studio toolchains.
