generate non-interactive scanner

This should avoid problem with missing decl. of isatty.

Change-Id: I23b8a43465afe99b49cc6c1ba93592564ed62d78

l10ntools/source/cfglex.l

@@ -46,6 +46,8 @@ extern "C" FILE * init(int, char **);
 int bText=0;
 %}
 
+%option never-interactive
+
 %p 24000
 %e 1200
 %n 500

l10ntools/source/srclex.l

@@ -48,6 +48,8 @@ extern "C" void Close();
 void YYWarning();
 %}
 
+%option never-interactive
+
 %p 24000
 %e 1200
 %n 500

l10ntools/source/xrmlex.l

@@ -54,6 +54,8 @@ void YYWarning();
 int bText=0;
 %}
 
+%option never-interactive
+
 %p 24000
 %e 1200
 %n 500