i2smo: don't check for executables if this is not a terminal host

+ on non-terminal szarp servers this check issues lots of unnecessary warnings

utils/i2smo

@@ -661,11 +661,17 @@ def get_item(ss):
 def get_item_params(ss):
 	return re.findall('\"([^"]*)\"', ss)
 
+def has_szarp_wx():
+	return os.path.isfile("/opt/szarp/bin/draw3")
+
 def exec_item(i):
 	p = get_item_params(i)
 	if len(p) != 2:
 		printerr("ERROR: wrong number of EXEC parameters (%s) for '%s'" % (len(p), trunc(i)))
 		return False
+	# if there is no szarp-wx package, then most probably its a szarp terminal
+	if not has_szarp_wx():
+		return True
 	name = p[0]
 	comm = p[1].split(' ')[0] # doesn't handle whitespaces in path
 	if verbose: print nesting_lvl * '\t' + "Checking for %s ..." % comm,