EVMVersion in langutil namespace instead of solidity

liblangutil/EVMVersion.h

@@ -25,9 +25,7 @@
 #include <boost/optional.hpp>
 #include <boost/operators.hpp>
 
-namespace dev
-{
-namespace solidity
+namespace langutil
 {
 
 /**
@@ -91,4 +89,3 @@ private:
 
 
 }
-}