[libc++] Fix some test failures in unusual configurations

Author: ldionne

libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_long_double.pass.cpp

@@ -24415,7 +24415,7 @@ void test12()
     output_iterator<char*> iter;
     std::locale lc = std::locale::classic();
     std::locale lg(lc, new my_numpunct);
-#ifdef __APPLE__
+#if defined(__APPLE__) && defined(__x86_64__)
 // This test is failing on FreeBSD, possibly due to different representations
 // of the floating point numbers.
     const my_facet f(1);

libcxxabi/test/incomplete_type.sh.cpp

@@ -14,6 +14,7 @@
 // addresses.
 
 // UNSUPPORTED: no-exceptions
+// UNSUPPORTED: -fno-rtti
 
 // NOTE: Link libc++abi explicitly and before libc++ so that libc++ doesn't drag
 // in the system libc++abi installation on OS X. (DYLD_LIBRARY_PATH is ignored