[NFC] Rename lit feature to '-fsized-deallocation' for consistency

The '-faligned-allocation' flag uses a feature with the same name (with a
leading dash).

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@347367 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array_fsizeddeallocation.sh.cpp

@@ -21,7 +21,7 @@
 
 
 // NOTE: Only clang-3.7 and GCC 5.1 and greater support -fsized-deallocation.
-// REQUIRES: fsized-deallocation
+// REQUIRES: -fsized-deallocation
 
 // RUN: %build -fsized-deallocation
 // RUN: %run

test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete_fsizeddeallocation.sh.cpp

@@ -20,7 +20,7 @@
 // XFAIL: availability_markup=macosx10.7
 
 // NOTE: Only clang-3.7 and GCC 5.1 and greater support -fsized-deallocation.
-// REQUIRES: fsized-deallocation
+// REQUIRES: -fsized-deallocation
 
 // RUN: %build -fsized-deallocation -O3
 // RUN: %run

utils/libcxx/test/config.py

@@ -446,7 +446,7 @@ class Configuration(object):
         # Run a compile test for the -fsized-deallocation flag. This is needed
         # in test/std/language.support/support.dynamic/new.delete
         if self.cxx.hasCompileFlag('-fsized-deallocation'):
-            self.config.available_features.add('fsized-deallocation')
+            self.config.available_features.add('-fsized-deallocation')
 
         if self.cxx.hasCompileFlag('-faligned-allocation'):
             self.config.available_features.add('-faligned-allocation')