Update changelog for M8

Change-Id: I8e50b811f3798c6f4cd21b8196f71502e8d0aea8
Merge "Update changelog for M8" into cm-11.0
common: Disable multithreaded dextop on RELEASE and SNAPSHOT builds

This needs some more work before it can be considered stable enough
for use on these builds.

Change-Id: Ic80603cc59623da878875e40de92bda5caef3331
ota: Validate any installed data's signature against our own

Try to prevent incompatible-signature system quirkiness

Change-Id: I73402d963a1b57ad0ee3c68ced4f2d7f074f927f
common: Set property for the CM releasetype

Set ro.cm.releasetype based on the deteremined releasetype of the
build.

Change-Id: I2c1aa7181f42342594bd6d5dc5f5252220ed3497
otasigcheck: set verification package to com.android.htmlviewer

We need to use something that will always be there and not replaced
by other packages.

Change-Id: Ide942865f284239ae2ae2503005ccc7e8272995c
otasigcheck: include multi-digit cert indices

If the cert index is greater than 9, we still want to include it.

Change-Id: I82787e59557ae0bb7f15da16630d2b0afb7cff06
otasigcheck: Fix the sed statement for multi-digit indices

It appears that some versions of sed do not work with the + symbol.
Instead of checking for one or more digits, check for a digit,
followed by zero or more digits.

Change-Id: I064df6a2bac4a634a3684ac1a5289dca1f4ba29c
Kristof's addons

Change-Id: Ife4e7b253882bb6cf396e4877f158ed18b142e90