guix: static-pie {x86_64,aarch64}-linux-gnu builds

[tobtoht]

For Android builds, #8929 uses a precompiled toolchain from the Android NDK, as such these builds cannot be considered bootstrappable.

This (WIP) PR produces bootstrappable static-pie binaries for aarch64-linux-gnu (and x86_64-linux-gnu).

With limited testing, both monerod and monero-wallet-cli appear to run fine inside a termux-chroot on Android 14.

As an additional benefit, these binaries run on linux distros with a glibc < 2.27, like Ubuntu 16.04 and Debian 9. I haven't experienced any issues so far running these on a machine with glibc 2.39 either.

Notes:

• Built with GCC 12, glibc 2.35
• The included glibc patch exists to fix: https://sourceware.org/bugzilla/show_bug.cgi?id=29514.