Adding upstream version 1:7.2+dfsg.upstream/1%7.2+dfsgupstream

Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>

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+----------
+About QEMU
+----------
+
+QEMU is a generic and open source machine emulator and virtualizer.
+
+QEMU can be used in several different ways. The most common is for
+"system emulation", where it provides a virtual model of an
+entire machine (CPU, memory and emulated devices) to run a guest OS.
+In this mode the CPU may be fully emulated, or it may work with
+a hypervisor such as KVM, Xen, Hax or Hypervisor.Framework to
+allow the guest to run directly on the host CPU.
+
+The second supported way to use QEMU is "user mode emulation",
+where QEMU can launch processes compiled for one CPU on another CPU.
+In this mode the CPU is always emulated.
+
+QEMU also provides a number of standalone commandline utilities,
+such as the ``qemu-img`` disk image utility that allows you to create,
+convert and modify disk images.
+
+.. toctree::
+   :maxdepth: 2
+
+   build-platforms
+   deprecated
+   removed-features
+   license