Minor tightening of .arclint regexs

Summary: Self-explanatory.

Test Plan: Eyeball it.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D11681

.arclint

@@ -71,8 +71,8 @@
     "text": {
       "type": "text",
       "exclude": [
-        "(^\\.arclint)",
-        "(^resources/sql/quickstart.sql)"
+        "(^\\.arclint$)",
+        "(^resources/sql/quickstart.sql$)"
       ]
     },
     "text-without-length": {
@@ -81,8 +81,8 @@
         "3": "disabled"
       },
       "include": [
-        "(^\\.arclint)",
-        "(^resources/sql/quickstart.sql)"
+        "(^\\.arclint$)",
+        "(^resources/sql/quickstart.sql$)"
       ]
     },
     "xhpast": {