build

Reintroduce QVM support #160

Job	Run time
WinXP x86 Release (Non-Portable)	14m 7s
macOS x86_64 Debug (Non-Portable)	2m 46s
Ubuntu x86 Debug (Non-Portable)	3m 27s
WinXP x86_64 Release (Non-Portable)	8m 15s
macOS x86_64 Release (Non-Portable)	6m 48s
Ubuntu x86 Release (Non-Portable)	6m 51s
Windows x86 Debug (Non-Portable)	3m 59s
Ubuntu x86_64 Debug (Non-Portable)	5m 8s
Windows x86 Release (Portable)	3m 45s
Ubuntu x86_64 Release (Non-Portable)	6m 8s
Windows x86 Release (Non-Portable)	4m 13s
Windows x86_64 Debug (Non-Portable)	4m 4s
Windows x86_64 Release (Portable)	4m 23s
Windows x86_64 Release (Non-Portable)	4m 25s
create-release	0s
create-latest	0s
	1h 18m 19s

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