Build minivold for recovery

 * We can't link to the main recovery executable due to various issues,
   so just build a static minivold.

 * Updated for 4.4

Change-Id: If110aa4fca9608d5c2a03f471773e7ce2c77dc91

minivold: adjustments for vold in recovery

- Mount directly to /storage/ instead of /mnt/media_rw
- Do not attempt to mount ASEC

Change-Id: Icb088a413e07222b302264d10f7c7f2aadfebcab

minivold: Adjust to 5.0

Change-Id: I9defc2c8642da603bfa0dcf0962152485f75f547