Add a restorecon_recursive built-in command to init.

Functionally equivalent to the restorecon -R toolbox command.
A use case is given by:
I48eaa2b9901ac8c978192c14493ba1058a089423

Also, fix error handling and documentation for restorecon command.

Change-Id: Ia7fbcc82645baf52c6bff0490d3492f458881cbb
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Revert "core: libcutils: increase the polling time for remount_ro to 4800"

This reverts commit 12c1af36c75d623641b968fe8e998e2a12a1c01a.
Revert "core: libcutils: increase the polling time for remount_ro to 4800"

This reverts commit 05b289329918ebb8fcd3b6539a45731b5ca7b471.
Revert "Track reboot sequences to figure out reboot recovery issue"

This reverts commit 638abf69dfeec51aace0c7b25c802f1f1133af6a.
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0