Implement policies in Phragment

Summary: This implements support for enforcing and setting policies in Phragment.

Test Plan: Set policies and ensured they were enforced successfully.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley

CC: Korvin, epriestley, aran

Maniphest Tasks: T4205

Differential Revision: https://secure.phabricator.com/D7751

resources/sql/patches/20131211.phragmentedges.sql

@@ -0,0 +1,15 @@
+CREATE TABLE {$NAMESPACE}_phragment.edge (
+  src VARCHAR(64) NOT NULL COLLATE utf8_bin,
+  type VARCHAR(64) NOT NULL COLLATE utf8_bin,
+  dst VARCHAR(64) NOT NULL COLLATE utf8_bin,
+  dateCreated INT UNSIGNED NOT NULL,
+  seq INT UNSIGNED NOT NULL,
+  dataID INT UNSIGNED,
+  PRIMARY KEY (src, type, dst),
+  KEY (src, type, dateCreated, seq)
+) ENGINE=InnoDB, COLLATE utf8_general_ci;
+
+CREATE TABLE {$NAMESPACE}_phragment.edgedata (
+  id INT UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
+  data LONGTEXT NOT NULL COLLATE utf8_bin
+) ENGINE=InnoDB, COLLATE utf8_general_ci;