Re-enable qemu-user-static builds

[ewlsh]

Static builds were failing due to incorrect build flags in glibc 2.35.

See https://sourceware.org/bugzilla/show_bug.cgi?id=29514.

I'm currently compiling this locally with a patched glibc 2.35 but glibc 2.38 is in this repository which should compile correctly unpatched.

I removed x86-only dependencies from qemu-system-x86 (seabios, edk2-ovmf) based on what I saw in Fedora's packaging but if these are compilable on aarch64 let me know and I can adjust.

(my local patch for glibc 2.35)

diff --unified --recursive --text a/Makeconfig b/Makeconfig
--- a/Makeconfig        2023-09-24 23:08:32.340839948 -0700
+++ b/Makeconfig        2023-09-24 23:11:54.619347519 -0700
@@ -1070,7 +1070,7 @@
 PIC-ccflag = -fPIC
 endif
 # This can be changed by a sysdep makefile
-pie-ccflag = -fpie
+pie-ccflag = -fPIE
 no-pie-ccflag = -fno-pie
 # This one should always stay like this unless there is a very good reason.
 PIE-ccflag = -fPIE
diff --unified --recursive --text a/sysdeps/sparc/Makefile b/sysdeps/sparc/Makefile
--- a/sysdeps/sparc/Makefile    2023-09-24 23:08:32.552836773 -0700
+++ b/sysdeps/sparc/Makefile    2023-09-24 23:16:15.058325731 -0700
@@ -1,9 +1,6 @@
 # The Sparc `long double' is a distinct type we support.
 long-double-fcts = yes
 
-pie-ccflag = -fPIE
-no-pie-ccflag = -fno-PIE
-
 ifeq ($(subdir),gmon)
 sysdep_routines += sparc-mcount
 endif

[ewlsh]

If glibc 2.38 can't be released yet (for whatever reason), let me know if there is a way to propose a patch to glibc 2.35 to unblock this 🌞