Subzero: Add "--verbose=status" option.

This just prints the function being translated, once per function.  This is useful if there is a crash or fatal error somewhere, and you want to quickly discover which function to set -verbose-focus on.

Also, fixes some warnings/errors in the MINIMAL build.

BUG= none
R=kschimpf@google.com

Review URL: https://codereview.chromium.org/1439983002 .
diff --git a/src/IceCfg.cpp b/src/IceCfg.cpp
index 3211c30..9bc1ba5 100644
--- a/src/IceCfg.cpp
+++ b/src/IceCfg.cpp
@@ -181,6 +181,8 @@
       FunctionTimer.reset(new TimerMarker(
           getContext()->getTimerID(GlobalContext::TSK_Funcs, Name),
           getContext(), GlobalContext::TSK_Funcs));
+    if (isVerbose(IceV_Status))
+      getContext()->getStrDump() << ">>>Translating " << Name << "\n";
   }
   TimerMarker T(TimerStack::TT_translate, this);