* src/c++98/Makefile.am: Move ctype.cc, ctype_configure_char.cc and
	ctype_members.cc to ...
	* src/c++11/Makefile.am: Here.
	* src/c++98/Makefile.in: Regenerate.
	* src/c++11/Makefile.in: Regenerate.
	* src/c++98/ctype.cc: Move file to ...
	* src/c++11/ctype.cc: Here, define ctype_base::blank.
	* config/abi/pre/gnu.ver: Export ctype_base::blank.
	* config/locale/generic/ctype_members.cc
	(ctype<wchar_t>::_M_convert_to_wmask): Handle blank. Update comments.
	* config/locale/gnu/ctype_members.cc
	(ctype<wchar_t>::_M_convert_to_wmask): Likewise.
	* config/os/aix/ctype_base.h (ctype_base::blank): Declare.
	* config/os/bionic/ctype_base.h (ctype_base::blank): Likewise.
	* config/os/bsd/darwin/ctype_base.h (ctype_base::blank): Declare.
	* config/os/bsd/darwin/ctype_inline.h (ctype<char>::is): Use blank.
	(ctype<wchar_t::do_is): Likewise.
	* config/os/bsd/dragonfly/ctype_base.h (ctype_base::blank): Declare.
	* config/os/bsd/dragonfly/ctype_inline.h (ctype<char>::is): Use blank.
	(ctype<wchar_t::do_is): Likewise.
	* config/os/bsd/freebsd/ctype_base.h (ctype_base::blank): Declare.
	* config/os/bsd/freebsd/ctype_inline.h (ctype<char>::is): Use blank.
	(ctype<wchar_t::do_is): Likewise.
	* config/os/bsd/netbsd/ctype_base.h (ctype_base::blank): Declare.
	* config/os/bsd/openbsd/ctype_base.h (ctype_base::blank): Likewise.
	* config/os/djgpp/ctype_base.h (ctype_base::blank): Likewise.
	* config/os/generic/ctype_base.h (ctype_base::blank): Declare.
	* config/os/generic/ctype_inline.h (ctype<char>::is): Use blank.
	* config/os/gnu-linux/ctype_base.h (ctype_base::blank): Declare.
	* config/os/hpux/ctype_base.h (ctype_base::blank): Likewise.
	* config/os/mingw32-w64/ctype_base.h (ctype_base::blank): Declare.
	* config/os/mingw32-w64/ctype_configure_char.cc
	(ctype<char>::classic_table()): Set blank bit for space and tab.
	* config/os/mingw32/ctype_base.h (ctype_base::blank): Declare.
	* config/os/mingw32/ctype_configure_char.cc
	(ctype<char>::classic_table()): Set blank bit for space and tab.
	* config/os/newlib/ctype_base.h (ctype_base::blank): Declare.
	* config/os/qnx/qnx6.1/ctype_base.h (ctype_base::blank): Likewise.
	* config/os/solaris/solaris2.10/ctype_base.h (ctype_base::blank):
	Likewise.
	* config/os/tpf/ctype_base.h (ctype_base::blank): Likewise.
	* config/os/uclibc/ctype_base.h (ctype_base::blank): Likewise.
	* config/os/vxworks/ctype_base.h (ctype_base::blank): Likewise.
	* include/bits/locale_facets.h (isblank): Define.
	* include/bits/localefwd.h (isblank): Declare.
	* testsuite/22_locale/classification/isblank.cc: New.
	* testsuite/22_locale/ctype_base/blank.cc: New.

From-SVN: r216464