build

Reintroduce QVM support #159

Job	Run time
Ubuntu x86 Debug (Non-Portable)	7m 16s
WinXP x86 Release (Non-Portable)	10m 37s
macOS x86_64 Debug (Non-Portable)	7m 9s
Ubuntu x86 Release (Non-Portable)	8m 1s
WinXP x86_64 Release (Non-Portable)	10m 17s
Windows x86 Debug (Non-Portable)	4m 53s
macOS x86_64 Release (Non-Portable)	7m 11s
Ubuntu x86_64 Debug (Non-Portable)	2m 35s
Windows x86 Release (Portable)	4m 34s
Ubuntu x86_64 Release (Non-Portable)	3m 33s
Windows x86 Release (Non-Portable)	4m 38s
Windows x86_64 Debug (Non-Portable)	4m 42s
Windows x86_64 Release (Portable)	4m 38s
Windows x86_64 Release (Non-Portable)	4m 19s
create-latest	0s
create-release	0s
	1h 24m 23s

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