get rid of piForeach

apply some code analyzer recommendations
ICU flag now check if libicu exists
prepare for more accurate growth of containers (limited PoT, then constantly increase size)

libs/console/piterminal.cpp

@@ -518,7 +518,7 @@ void PITerminal::applyEscSeq(PIString es) {
 				return;
 			}
 			PIStringList args = es.split(";");
-			piForeachC(PIString & a, args) {
+			for (const auto & a: args) {
 				int av = a.toInt();
 				switch (av) {
 				case 0: PRIVATE->cur_format = PIScreenTypes::CellFormat(); break;
@@ -862,7 +862,7 @@ bool PITerminal::initialize() {
 	ws.ws_col        = dsize_x;
 	ws.ws_row        = dsize_y;
 	PIStringList env = PIProcess::currentEnvironment();
-	piForeachC(PIString & e, env)
+	for (const auto & e: env)
 		if (e.startsWith("TERM=")) {
 			PRIVATE->term_type = termType(e.mid(5).trim().toLowerCase());
 			// piCout << PRIVATE->term_type;