version 4.5.0

PIThread::stopAndWait now returns bool
PIKbdListener on Linux now use piwaitevent_p and can immediately stop
new base method piZeroMemory, also migrate all "memset 0" to piZeroMemory

utils/deploy_tool/main.cpp

@@ -206,7 +206,7 @@ PIString execute(const PIString & cmd) {
 	if (fp) {
 		const int sz = 256;
 		char in[sz];
-		memset(in, 0, sz);
+		piZeroMemory(in, sz);
 		while (true) {
 			int r = fread(in, 1, sz, fp);
 			if (r <= 0) break;