Copy stable/11@r303970 to releng/11.0 as part of the 11.0-RELEASE
cycle.

Prune svn:mergeinfo from the new branch, and rename it to RC1.

Update __FreeBSD_version.

Use the quarterly branch for the default FreeBSD.conf pkg(8) repo and
the dvd1.iso packages population.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Upgrade our copies of clang, llvm, lldb and compiler-rt to 3.8.0
release.

Please note that from 3.5.0 onwards, clang, llvm and lldb require C++11
support to build; see UPDATING for more information.

Release notes for llvm and clang will soon be available here:
<http://llvm.org/releases/3.8.0/docs/ReleaseNotes.html>
<http://llvm.org/releases/3.8.0/tools/clang/docs/ReleaseNotes.html>

Thanks to Ed Maste, Roman Divacky, Davide Italiano and Antoine Brodin
for their help.

Relnotes: yes

Update llvm, clang and lldb to trunk r257626, and update build glue.

Merge LLDB 3.8

As with previous imports a number of plugins not immediately relevant
to FreeBSD have been excluded:

ABIMacOSX_i386
ABIMacOSX_arm
ABIMacOSX_arm64
ABISysV_hexagon
AppleObjCRuntimeV2
AppleObjCRuntimeV1
SystemRuntimeMacOSX
RenderScriptRuntime
GoLanguageRuntime
GoLanguage
ObjCLanguage
ObjCPlusPlusLanguage
ObjectFilePECOFF
DynamicLoaderWindowsDYLD
platform_linux
platform_netbsd
PlatformWindows
PlatformKalimba
platform_android
DynamicLoaderMacOSXDYLD
ObjectContainerUniversalMachO
PlatformRemoteiOS
PlatformMacOSX
OperatingSystemGo

Vendor import of stripped lldb trunk r256633:
https://llvm.org/svn/llvm-project/lldb/trunk@256633