glib: Build static libraries.

[maleadt]

I need the .a's to compile qemu statically. It's not ideal to ship these to users, but lacking separate dev JLLs this is the only solution for now, and it's only a couple of MBs.

Note that we'll eventually want to move these out, e.g. using JuliaPackaging/BinaryBuilder.jl#778, but in the meantime let's just put these in main JLL.

[maleadt]

Checking for alignment of "size_t" : -1
Running compile:
Working directory:  /workspace/srcdir/glib-2.74.0/build_glib/meson-private/tmp7ozm9qrh
Command line:  /opt/bin/aarch64-apple-darwin20-libgfortran5-cxx11/aarch64-apple-darwin20-clang -I/workspace/destdir/include /workspace/srcdir/glib-2.74.0/build_glib/meson-private/tmp7ozm9qrh/testfile.c -o /workspace/srcdir/glib-2.74.0/build_glib/meson-private/tmp7ozm9qrh/output.obj -c -O0 -Werror=implicit-function-declaration -Werror=unknown-warning-option -Werror=unused-command-line-argument -Werror=ignored-optimization-argument -std=gnu99

Code:
 #include <stdio.h>
        #include <stddef.h>
        int main(void) {
            wchar_t something;
            return 0;
        }
Compiler stdout:

Compiler stderr:
 clang-13: error: -Wl,-sdk_version,11.0: 'linker' input unused [-Werror,-Wunused-command-line-argument]

Checking for size of "wchar_t" : -1

[giordano]

Gotta ask who believes that defaulting to -Werror is a good idea

[maleadt]

It's meson, actually. This looks like mesonbuild/meson#4542, but we use a version of meson that includes the fix...