Re: [libvirt] PATCH: Don't rely on host binaries in QEMU tests

The QEMU test suites rely on the QEMU/KVM/Xenner binaries being present in /usr/bin. This has obvious problems and is unneccessary. The solution is to not use the qemudCapsInit() function which initializes capabilities based on binaries present. Instead I add a custom impl just for the test cases which adds a pre-defined stable set of capabilities. I also had to move a stat() check out of qemudBuildCommandLine() and into its caller. It probably should have been there in the first place anyway