Symbol Resolver Unit Tests

* updated enumeration tests for symbol creation
  - related to sealangdotorg/sea#22
  - `enumeration.casm` works
  - `enumeration_uses.casm` still has grammar parser problems due to the
    `dot` in the identifier name
     - related to ref sealangdotorg/sea#19

uts/symtbl/enumeration.casm

@@ -29,7 +29,5 @@ enum ABC = { A, B, C }
 
 rule foo =
 {
-    print( A )
-
     program( self ) := undef
 }

uts/symtbl/enumeration_uses.casm

@@ -0,0 +1,39 @@
+//
+//  Copyright (c) 2014-2017 CASM Organization
+//  All rights reserved.
+//
+//  Developed by: Philipp Paulweber
+//                Emmanuel Pescosta
+//                https://github.com/casm-lang/libcasm-tc
+//
+//  This file is part of libcasm-tc.
+//
+//  libcasm-tc is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  libcasm-tc is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with libcasm-tc. If not, see <http://www.gnu.org/licenses/>.
+//
+
+
+CASM init foo
+
+enum ABC = { A, B, C }
+
+rule foo =
+{
+    let x = ABC.A in skip
+
+    let x : ABC = ABC.B in skip
+
+    let x : ABC = .C in skip
+
+    program( self ) := undef
+}