Update CLI copyright to 2020 (#350)

src/main.c

@@ -192,7 +192,7 @@ int main(int argc, pchar *argv[]) {
 		file = PSTR("hlboot.dat");
 		fchk = pfopen(file,"rb");
 		if( fchk == NULL ) {
-			printf("HL/JIT %d.%d.%d (c)2015-2019 Haxe Foundation\n  Usage : hl [--debug <port>] [--debug-wait] <file>\n",HL_VERSION>>16,(HL_VERSION>>8)&0xFF,HL_VERSION&0xFF);
+			printf("HL/JIT %d.%d.%d (c)2015-2020 Haxe Foundation\n  Usage : hl [--debug <port>] [--debug-wait] <file>\n",HL_VERSION>>16,(HL_VERSION>>8)&0xFF,HL_VERSION&0xFF);
 			return 1;
 		}
 		fclose(fchk);