Add <lang>_(static|shared)_args #13883

Job	Run time
Arch / PyPy	31m 57s
Ubuntu Rolling (gcc, g++)	28m 38s
Arch Linux	26m 26s
Ubuntu Rolling (--unity=on -Ddefault_library=static, --no-unittests, gcc, g++)	20m 34s
CUDA (on Arch)	9m 11s
Ubuntu Rolling (-Ddefault_library=both, --no-unittests, gcc, g++)	17m 9s
Fedora	30m 29s
Ubuntu Rolling (clang, clang++)	27m 14s
OpenSUSE	23m 1s
Ubuntu Rolling (--unity=on, --no-unittests, clang, clang++)	18m 54s
Ubuntu Bionic	25m 36s
Ubuntu Rolling (--cross ubuntu-armhf.json --cross linux-mingw-w64-64bit.json, 0, gcc, g++)	20m 2s
Ubuntu Rolling (--cross ubuntu-armhf.json --cross linux-mingw-w64-64bit.json, --unity=on, gcc, g++)	19m 23s
	4h 58m 34s

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