merged concurrent to main library

removed PIConditionLock, use PIMutex instead

lib/main/core/pistring.h

@@ -51,6 +51,8 @@ public:
 
 	PIString(const PIString & o): PIDeque<PIChar>() {*this += o;}
 
+	PIString(PIString && o): PIDeque<PIChar>() {swap(o);}
+
 	
 	//! Contructs string with single symbol "c"
 	PIString(const PIChar & c): PIDeque<PIChar>() {*this += c;}
@@ -89,6 +91,8 @@ public:
 
 	PIString & operator =(const PIString & o) {if (this == &o) return *this; clear(); *this += o; return *this;}
 
+	PIString & operator =(PIString && o) {if (this == &o) return *this; swap(o); return *this;}
+
 	/*! \brief Return c-string representation of string
 	 * \details Converts content of string to c-string and return
 	 * pointer to first char. This buffer is valid until new convertion