[PATCH] Add a new routine to libc++abi to get the number of uncaught exceptions

[Jonathan Roelofs]

cool... LGTM.


================
Comment at: test/uncaught_exceptions.pass.cpp:1
@@ +1,2 @@
+//===------------------------- catch_ptr_02.cpp ---------------------------===//
+//
----------------
catch_ptr_02.cpp --> uncaught_exceptions.pass.cpp

http://reviews.llvm.org/D10067

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