Revert "recovery: fix --update_package using legacy path"

Backing this out for now to prevent a tragic recovery loop
where it'll keep restarting to flash from /cache/recovery/command
and crash from signature verification bug. The loop can only
be ended by removing the command file via adb.

This reverts commit ca028615e43fe09c3dcceeb47ca8cf3ceb08c2b4.

Change-Id: Iea29ee04871e136c680df699f5d19570aba44113
Merge "Revert "recovery: fix --update_package using legacy path"" into cm-10.2
recovery: Don't link with minivold

 * There are issues with conflicting symbols in OpenSSL that cause some
   nasty problems. Let's just build minivold as a standalone binary so
   we avoid anything like this in the future as well.

Change-Id: I691a403bb377171989cba4ff74a515050862be40
Revert "Revert "recovery: fix --update_package using legacy path""

This reverts commit ea09a67a552e58835f82382cc76b59b892535468.

Change-Id: I172ec887dd52e373d249d61b22eccaaae03dfb75
Merge remote-tracking branch 'github/cm-10.2' into mackay-cm102