13.11: re-org file structure

Fathi has recommended a better file structure that also matches the
server layout.

The UEFI release notes may get moved into a separate repo.

Signed-off-by: Ryan Harkin <ryan.harkin@linaro.org>
13.11: android-lsk: change YY.MM links to 13.11

Signed-off-by: Ryan Harkin <ryan.harkin@linaro.org>
13.11: oe-lsk: update YY.MM references

Added ${DATE}, ${IMAGENUM} and ${HWPACKNUM} for values we don't know
until release candidate time.

Signed-off-by: Ryan Harkin <ryan.harkin@linaro.org>