PIByteArray rvalue, some fixes

lib/main/core/pibytearray.h

@@ -56,6 +56,10 @@ public:
 	//! Constructs an empty byte array
 	PIByteArray() {;}
 
+	PIByteArray(const PIByteArray & o): PIDeque<uchar>(o) {}
+
+	PIByteArray(PIByteArray && o): PIDeque<uchar>(std::move(o)) {}
+
 	//! Constructs 0-filled byte array with size "size"
 	PIByteArray(const uint size) {resize(size);}
 
@@ -124,6 +128,10 @@ public:
 
 	void operator =(const PIDeque<uchar> & d) {resize(d.size()); memcpy(data(), d.data(), d.size());}
 
+	PIByteArray & operator =(const PIByteArray & o) {if (this == &o) return *this; clear(); append(o); return *this;}
+
+	PIByteArray & operator =(PIByteArray && o) {swap(o); return *this;}
+
 	static PIByteArray fromUserInput(PIString str);
 	static PIByteArray fromHex(PIString str);
 	static PIByteArray fromBase64(const PIByteArray & base64);