Require security-acl 2.7 for BC

Author: scaytrase

composer.json

@@ -17,6 +17,7 @@
     ],
     "require": {
         "php": ">=5.3.9",
+        "symfony/security-acl": "~2.7",
         "symfony/event-dispatcher": "~2.2|~3.0.0",
         "symfony/http-foundation": "~2.1|~3.0.0",
         "symfony/http-kernel": "~2.4|~3.0.0"
@@ -39,11 +40,8 @@
         "symfony/expression-language": "~2.6|~3.0.0"
     },
     "suggest": {
-        "symfony/class-loader": "For using the ACL generateSql script",
-        "symfony/finder": "For using the ACL generateSql script",
         "symfony/validator": "For using the user password constraint",
         "symfony/routing": "For using the HttpUtils class to create sub-requests, redirect the user, and match URLs",
-        "doctrine/dbal": "For using the built-in ACL implementation",
         "symfony/expression-language": "For using the expression voter",
         "ircmaxell/password-compat": "For using the BCrypt password encoder in PHP <5.5"
     },