eCos uSTL 1.3 port for review

[Sergei Gavrikov]

Uwe Kindler wrote:
> It would be really great, If you could investigate a little bit more, 
> what causes the SIGSEG for synthetic target. Would you be so kind to run 
> the new snprintf_c99.c test on synthetic target when C99 compliance 
> activated to check if my vfnprintf() patch is working properly?
 
Uwe, 

snprintf_c99 test passed successfully on synth. It seems that I should
grep all  #if linux in ustl and look on that. I will try to rebuild ustl
with assertions and will try to re-run the tests. I'll let you know what
I will get then.

Sergei