- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.3.
- Update default pkg(8) configuration to use the quarterly branch.

Approved by: re (implicit)

MFC r273375
Add support AMD processors with the SVM/AMD-V hardware extensions.

MFC r273749
Remove bhyve SVM feature printf's now that they are available in the general
CPU feature detection code.

MFC r273766
Add missing 'break' pointed out by Coverity CID 1249760.

MFC r276098
Allow ktr(4) tracing of all guest exceptions via the tunable "hw.vmm.trace_guest_exceptions"

MFC r276392
Inject #UD into the guest when it executes either 'MONITOR' or 'MWAIT' on an
AMD/SVM host.

MFC r276402
Remove "svn:mergeinfo" property that was dragged along when these files were
svn copied in r273375.

Merge projects/bhyve_svm into HEAD.

After this change bhyve supports AMD processors with the SVM/AMD-V hardware
extensions.

More details available here:
https://lists.freebsd.org/pipermail/freebsd-virtualization/2014-October/002905.html

Submitted by: Anish Gupta (akgupt3@gmail.com)
Tested by: Benjamin Perrault (ben.perrault@gmail.com)
Tested by: Willem Jan Withagen (wjw@digiware.nl)

Get rid of unused forward declaration of 'struct svm_softc'.

Bring (almost) up-to-date with HEAD.

- use the new virtual APIC page
- update to current bhyve APIs

Tested by Anish with multiple FreeBSD SMP VMs on a Phenom,
and verified by myself with light FreeBSD VM testing
on a Sempron 3850 APU.

The issues reported with Linux guests are very likely to still
be here, but this sync eliminates the skew between the
project branch and CURRENT, and should help to determine
the causes.

Some follow-on commits will fix minor cosmetic issues.

Submitted by: Anish Gupta (akgupt3@gmail.com)

Enable memory overcommit for AMD processors.

- No emulation of A/D bits is required since AMD-V RVI
supports A/D bits.
- Enable pmap PT_RVI support(w/o PAT) which is required for
memory over-commit support.
- Other minor fixes:
* Make use of VMCB EXITINTINFO field. If a #VMEXIT happens while
delivering an interrupt, EXITINTINFO has all the details that bhyve
needs to inject the same interrupt.
* SVM h/w decode assist code was incomplete - removed for now.
* Some minor code clean-up (more coming).

Submitted by: Anish Gupta (akgupt3@gmail.com)

- SVM nested paging support
- Define data structures to contain the SVM vcpu context
- Define data structures to contain guest and host software context
- Change license in vmcb.h and vmcb.c to remove references to NetApp that
inadvertently sneaked in when the license text was copied from amdv.c.

Submitted by: Anish Gupta (akgupt3@gmail.com)