Fix author_id mismatch after DB upgrade

Fix author_id mismatch after DB upgrade

author_id is a DB table primary key and depends on apps instalation
order. Instead of using author_id in SMACK label, use 64 bits (16 character string)
of SHA1(author_name) in hex format.

This commit includes:
- sqlite3-sha1 extension copied from:
  https://github.com/sqlite/sqlite/blob/master/ext/misc/sha1.c
- new DB schema and migration script,
- rules loader adjustment to new SMACK label,
- filesystem (SECURITY_MANAGER_PATH_TRUSTED_RW) relabeling,
- app instalation changes.

Change-Id: I4f478e0b9dfde06ef752d250d5bc7ef3183cde19