Add test to link when colon is not present in library name

Author: arthcp

test/linker.js

@@ -155,4 +155,15 @@ tape('Linking', function (t) {
     st.equal(bytecode, '6060604052341561000000000000000000000000000000000000012345666606060606060');
     st.end();
   });
+
+  t.test('link properly when library doesn\'t have colon in name', function (st) {
+    /*
+      'lib.sol': 'library L { function f() public returns (uint) { return 7; } }',
+      'cont.sol': 'import "lib.sol"; contract x { function g() public { L.f(); } }'
+    */
+    var bytecode = '608060405234801561001057600080fd5b5061011f806100206000396000f300608060405260043610603f576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff168063e2179b8e146044575b600080fd5b348015604f57600080fd5b5060566058565b005b73__libName_______________________________6326121ff06040518163ffffffff167c010000000000000000000000000000000000000000000000000000000002815260040160206040518083038186803b15801560b757600080fd5b505af415801560ca573d6000803e3d6000fd5b505050506040513d602081101560df57600080fd5b8101908080519060200190929190505050505600a165627a7a72305820ea2f6353179c181d7162544d637b7fe2d9e8da9803a0e2d9eafc2188d1d59ee30029';
+    bytecode = linker.linkBytecode(bytecode, { 'libName': '0x123456' });
+    st.ok(bytecode.indexOf('_') < 0);
+    st.end();
+  });
 });