Make tests failing with version namespace UNSUPPORTED

[François Dumont]

Hi

 Â Â Â  I would like to propose to add a new dg-require-normal-namespace 
attribute to make several tests failing when version namespace is active 
UNSUPPORTED. It is like dg-require-normal-mode but also consider when 
version namespace is being used.

 Â Â Â  I still need to complete execution of all tests with version 
namespace but I think that all tests will be ok then.

 Â Â Â  I have also updated the code used for dg-require-normal-mode to 
include c++config.h in case users are changing this file to activate any 
mode.

 Â Â Â  * testsuite/lib/libstdc++.exp ([check_v3_target_normal_namespace]): 
New.
 Â Â Â  * testsuite/lib/dg-options.exp ([dg-require-normal-namespace]): New,
 Â Â Â  use latter.
 Â Â Â  * testsuite/23_containers/headers/bitset/synopsis.cc: Replace
 Â Â Â  dg-require-normal-mode with latter.
 Â Â Â  * testsuite/23_containers/headers/deque/synopsis.cc: Likewise.
 Â Â Â  * testsuite/23_containers/headers/forward_list/synopsis.cc: Likewise.
 Â Â Â  * testsuite/23_containers/headers/list/synopsis.cc: Likewise.
 Â Â Â  * testsuite/23_containers/headers/map/synopsis.cc: Likewise.
 Â Â Â  * testsuite/23_containers/headers/set/synopsis.cc: Likewise.
 Â Â Â  * testsuite/23_containers/headers/vector/synopsis.cc: Likewise.
 Â Â Â  * testsuite/23_containers/map/modifiers/erase/abi_tag.cc: Likewise.
 Â Â Â  * testsuite/23_containers/multimap/modifiers/erase/abi_tag.cc: 
Likewise.
 Â Â Â  * testsuite/23_containers/multiset/modifiers/erase/abi_tag.cc: 
Likewise.
 Â Â Â  * testsuite/23_containers/set/modifiers/erase/abi_tag.cc: Likewise.

 Â Â Â  Ok to commit ?

François


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