StdLib: Produce DevMedia as a library class alternative to DevShell.
AppPkg: Replace existing DevShell dependencies with DevMedia.
  
These patches will NOT cause existing code which uses DevShell to break.
During an interim period, either DevShell or DevMedia may be used.
In the future, DevShell will be removed from the code base.

During the interim, DevShell and DevMedia refer to the same library.

StdLib/LibC/Uefi/Devices/daShell.inf
  Make this library also satisfy the DevMedia library class.
StdLib/StdLib.inc
  Add a library class definition for DevMedia

AppPkg/Applications/OrderedCollectionTest/OrderedCollectionTest.inf
AppPkg/Applications/Python/PythonCore.inf
AppPkg/Applications/Sockets/GetAddrInfo/GetAddrInfo.inf
AppPkg/Applications/Sockets/GetHostByAddr/GetHostByAddr.inf
AppPkg/Applications/Sockets/GetHostByDns/GetHostByDns.inf
AppPkg/Applications/Sockets/GetHostByName/GetHostByName.inf
AppPkg/Applications/Sockets/GetNameInfo/GetNameInfo.inf
AppPkg/Applications/Sockets/GetNetByAddr/GetNetByAddr.inf
AppPkg/Applications/Sockets/GetNetByName/GetNetByName.inf
AppPkg/Applications/Sockets/GetServByName/GetServByName.inf
AppPkg/Applications/Sockets/GetServByPort/GetServByPort.inf
AppPkg/Applications/Sockets/RecvDgram/RecvDgram.inf
AppPkg/Applications/Sockets/SetHostName/SetHostName.inf
AppPkg/Applications/Sockets/SetSockOpt/SetSockOpt.inf
AppPkg/Applications/Sockets/TftpServer/TftpServer.inf
AppPkg/Applications/Sockets/WebServer/WebServer.inf
  Change LibraryClass dependency from DevShell to DevMedia
  
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by:  Daryl McDaniel  <daryl.mcdaniel@intel.com>
Reviewed-by:  Jaben Carsey <Jaben.carsey@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16142 6f19259b-4bc3-4df7-8a09-765794883524
ArmPlatformPkg: Introduced ArmPlatformSysConfigLib NULL library

Some platforms do not have SysConfig controller used by the ARM
Versatile Express.
Some peripheral drivers currently rely on SysConfigLib (eg: PL031
RTC driver, LCD driver).

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16143 6f19259b-4bc3-4df7-8a09-765794883524
ArmPkg/TimerDxe: add workaround for KVM timer interrupt handling

KVM on ARM currently masks the timer interrupt on the timer side when
delivering an interrupt to the guest. This itself is a workaround for an
issue where the interrupt is reraised and trapped by the host as soon as
the guest is entered, resulting in the guest being starved.

Work around this by calling ArmGenericTimerEnable () after servicing each
interrupt. The virtual version of ArmGenericTimerCounterLib will then
make sure to unmask the interrupt again.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-By: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16144 6f19259b-4bc3-4df7-8a09-765794883524
EmbeddedPkg: Introduced NULL library for SerialPortExtLib

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16145 6f19259b-4bc3-4df7-8a09-765794883524