printers.py (add_one_template_type_printer): Add type printer for container types in std::__debug namespace.

2019-05-06  François Dumont  <fdumont@gcc.gnu.org>

	* python/libstdcxx/v6/printers.py (add_one_template_type_printer):
	Add type printer for container types in std::__debug namespace.
	* testsuite/lib/gdb-test.exp (whatis-regexp-test): New.
	(gdb-tests): Use distinct parameters for the type of test and use of
	regex.
	(gdb-test): Check for regex test even if 'whatis' test.
	* testsuite/libstdc++-prettyprinters/80276.cc: Adapt for _GLIBCXX_DEBUG
	mode.
	* testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
	* testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
	* testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
	* testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
	* testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
	* testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
	* testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.

From-SVN: r270893