[SCons] Improve CMake and OpenSSL macOS/iOS targets #234

Job	Run time
📊 Static Checks (clang-format, black format, file format)	21s
🔧 Build (android, x86_64, android_arch=x86_64, ubuntu-20.04, android-x86_64)	2m 50s
🔧 Build (android, arm64, android_arch=arm64v8, ubuntu-20.04, android-arm64)	2m 9s
🔧 Build (ios, x86_64, ios_arch=x86_64, ios_simulator=true, macos-12, ios-x86_64-simulator)	7m 35s
🔧 Build (ios, arm64, ios_arch=arm64, macos-12, ios-arm64)	5m 58s
🔧 Build (linux, x86_32, i686-godot-linux-gnu_sdk-buildroot, bits=32, ubuntu-20.04, linux-x86_32)	3m 29s
🔧 Build (linux, x86_64, x86_64-godot-linux-gnu_sdk-buildroot, bits=64, ubuntu-20.04, linux-x86_64)	3m 25s
🔧 Build (linux, arm32, arm-godot-linux-gnueabihf_sdk-buildroot, bits=32, ubuntu-20.04, linux-arm32)	3m 46s
🔧 Build (linux, arm64, aarch64-godot-linux-gnu_sdk-buildroot, bits=64, ubuntu-20.04, linux-arm64)	4m 6s
🔧 Build (macos, universal, macos_arch=universal bits=64, macos-12, macos-universal)	12m 18s
🔧 Build (windows, x86_32, bits=32, use_mingw=yes, ubuntu-20.04, amd64_x86, win-x86_32)	3m 22s
🔧 Build (windows, x86_64, bits=64, use_mingw=yes, ubuntu-20.04, amd64, win-x86_64)	3m 54s
📦 Package	1m 38s
	54m 51s

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