linux: use OpenSSL for non-MUSL builds

LibreSSL isn't well tested with CPython. Let's use a supported SSL
implementation for glibc linked Linux distributions.

Author: indygreg

release-linux.sh

@@ -7,10 +7,10 @@ set -eo pipefail
 
 export PYBUILD_RELEASE_TAG=$(date --utc '+%Y%m%dT%H%M')
 
-./build-linux.py --target-triple x86_64-unknown-linux-gnu --python cpython-3.8 --optimizations debug --libressl
-./build-linux.py --target-triple x86_64-unknown-linux-gnu --python cpython-3.8 --optimizations pgo --libressl
-./build-linux.py --target-triple x86_64-unknown-linux-gnu --python cpython-3.9 --optimizations debug --libressl
-./build-linux.py --target-triple x86_64-unknown-linux-gnu --python cpython-3.9 --optimizations pgo --libressl
+./build-linux.py --target-triple x86_64-unknown-linux-gnu --python cpython-3.8 --optimizations debug
+./build-linux.py --target-triple x86_64-unknown-linux-gnu --python cpython-3.8 --optimizations pgo
+./build-linux.py --target-triple x86_64-unknown-linux-gnu --python cpython-3.9 --optimizations debug
+./build-linux.py --target-triple x86_64-unknown-linux-gnu --python cpython-3.9 --optimizations pgo
 
 ./build-linux.py --target-triple x86_64-unknown-linux-musl --python cpython-3.8 --optimizations debug --libressl
 ./build-linux.py --target-triple x86_64-unknown-linux-musl --python cpython-3.8 --optimizations noopt --libressl