stlport: deal with compile warnings

- In preparation for dependent projects to turn on
  -Werror and -Wunused

Change-Id: Ibf1b146d8d389e8747ba1ea1735cb55722b85971
stlport: c_locale_dummy unused argument warnings

Change-Id: Ib5e6736f83791c9795f9d4a5b5b8b201ed6327f6
stlport: if we can not throw, let us abort

Change-Id: I8b9ea8d48548bd879d03e605e200c0e7e7c73948
Merge changes Ib5e6736f,Ibf1b146d

* changes:
  stlport: c_locale_dummy unused argument warnings
  stlport: deal with compile warnings
Merge "stlport: if we can not throw, let us abort"
auto-merger: merge in from aosp/master