gnome: Added 'executable' method for GTK Android #16906

Job	Run time
Arch / PyPy	20m 9s
Arch Linux	20m 3s
Ubuntu Rolling (gcc, g++)	20m 28s
CUDA (on Arch)	7m 26s
Ubuntu Rolling (--unity=on -Ddefault_library=static, --no-unittests, gcc, g++)	13m 56s
Fedora	17m 38s
Ubuntu Rolling (-Ddefault_library=both, --no-unittests, gcc, g++)	14m 13s
Gentoo	21m 57s
Ubuntu Rolling (clang, clang++)	22m 47s
OpenSUSE	16m 49s
Ubuntu Rolling (--unity=on, --no-unittests, clang, clang++)	15m 39s
Ubuntu Bionic	15m 40s
Ubuntu Rolling (--cross ubuntu-armhf.json --cross linux-mingw-w64-64bit.json, 0, gcc, g++)	14m 8s
Ubuntu Rolling (--cross ubuntu-armhf.json --cross linux-mingw-w64-64bit.json, --unity=on, gcc, g++)	14m 45s
	3h 55m 38s

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