For the Visual Studio 201x projects, we can force the "install" projects
to always run in a simpler way, by specifying an output file that will
never exist. Makes things look a bit cleaner.
We may not have $(CopyDir) created, which the script that generates the
.pc files check for, so create it if it is not there. This makes things a
bit more convenient for people.
Add a generic script, pc_base.py, which can be utilized to obtain path
info, along with user-input version info, which can be used to generate
pkg-config .pc files. Also enhance replace.py a bit so that it can also
be used in the future to replace multiple items in a file in one shot.
This is done to make building introspection files easier, as it depends
much on the pkg-config .pc files to work.
Update the project files so that when Python is available, we can generate
the full, usable .pc files when we complete and 'install' the builds, and
copy them to appropriate locations so that pkg-config can be set to find
them easily.
Make use of the common autotools module that is used to generate the MSVC
project files from their respective templates so that the main build files
beccome cleaner, and enhance them in a way that the headers that should be
installed can be written to the property sheets during 'make dist', so that
the chances of missing headers for MSVC builds can be greatly reduced.
Also use this autotools module to fill in the projects for
glib-compile-schemas and glib-compile-resources.
https://bugzilla.gnome.org/show_bug.cgi?id=735429
