script: add ToByteVector() for converting anything with begin/end

This should move to a util header once their dependencies are cleaned up.

src/script/script.h

@@ -16,6 +16,12 @@
 
 static const unsigned int MAX_SCRIPT_ELEMENT_SIZE = 520; // bytes
 
+template <typename T>
+std::vector<unsigned char> ToByteVector(const T& in)
+{
+    return std::vector<unsigned char>(in.begin(), in.end());
+}
+
 /** Script opcodes */
 enum opcodetype
 {
@@ -358,7 +364,6 @@ public:
     CScript(int64_t b)        { operator<<(b); }
 
     explicit CScript(opcodetype b)     { operator<<(b); }
-    explicit CScript(const uint256& b) { operator<<(b); }
     explicit CScript(const CScriptNum& b) { operator<<(b); }
     explicit CScript(const std::vector<unsigned char>& b) { operator<<(b); }
 
@@ -373,28 +378,6 @@ public:
         return *this;
     }
 
-    CScript& operator<<(const uint160& b)
-    {
-        insert(end(), sizeof(b));
-        insert(end(), (unsigned char*)&b, (unsigned char*)&b + sizeof(b));
-        return *this;
-    }
-
-    CScript& operator<<(const uint256& b)
-    {
-        insert(end(), sizeof(b));
-        insert(end(), (unsigned char*)&b, (unsigned char*)&b + sizeof(b));
-        return *this;
-    }
-
-    CScript& operator<<(const CPubKey& key)
-    {
-        assert(key.size() < OP_PUSHDATA1);
-        insert(end(), (unsigned char)key.size());
-        insert(end(), key.begin(), key.end());
-        return *this;
-    }
-
     CScript& operator<<(const CScriptNum& b)
     {
         *this << b.getvch();