[io grant] Document IO::Path::* subclasses

doc/Type/IO/Path/Cygwin.pod6

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+=begin pod
+
+=TITLE class IO::Path::Cygwin
+
+=SUBTITLE IO::Path preloaded with IO::Spec::Cygwin
+
+    class IO::Path::Cygwin is IO::Path { }
+
+This sub-class of L«C<IO::Path>|/type/IO::Path», preloaded with
+L«C<IO::Spec::Cygwin>|/type/IO::Spec::Cygwin» in the C<$.SPEC> attribute.
+
+=head1 Methods
+
+=head2 method new
+
+Same as L«C<IO::Path.new>|/type/IO::Path#method_new», except
+C<:$SPEC> cannot be set and defaults to
+L«C<IO::Spec::Cygwin>|/type/IO::Spec::Cygwin», regardless of the operating
+system the code is being run on.
+
+=end pod
+
+# vim: expandtab shiftwidth=4 ft=perl6

doc/Type/IO/Path/QNX.pod6

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+=begin pod
+
+=TITLE class IO::Path::QNX
+
+=SUBTITLE IO::Path preloaded with IO::Spec::QNX
+
+    class IO::Path::QNX is IO::Path { }
+
+This sub-class of L«C<IO::Path>|/type/IO::Path», preloaded with
+L«C<IO::Spec::QNX>|/type/IO::Spec::QNX» in the C<$.SPEC> attribute.
+
+=head1 Methods
+
+=head2 method new
+
+Same as L«C<IO::Path.new>|/type/IO::Path#method_new», except
+C<:$SPEC> cannot be set and defaults to
+L«C<IO::Spec::QNX>|/type/IO::Spec::QNX», regardless of the operating system
+the code is being run on.
+
+=end pod
+
+# vim: expandtab shiftwidth=4 ft=perl6

doc/Type/IO/Path/Unix.pod6

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+=begin pod
+
+=TITLE class IO::Path::Unix
+
+=SUBTITLE IO::Path preloaded with IO::Spec::Unix
+
+    class IO::Path::Unix is IO::Path { }
+
+This sub-class of L«C<IO::Path>|/type/IO::Path», preloaded with
+L«C<IO::Spec::Unix>|/type/IO::Spec::Unix» in the C<$.SPEC> attribute.
+
+=head1 Methods
+
+=head2 method new
+
+Same as L«C<IO::Path.new>|/type/IO::Path#method_new», except
+C<:$SPEC> cannot be set and defaults to
+L«C<IO::Spec::Unix>|/type/IO::Spec::Unix», regardless of the operating system
+the code is being run on.
+
+=end pod
+
+# vim: expandtab shiftwidth=4 ft=perl6

doc/Type/IO/Path/Win32.pod6

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+=begin pod
+
+=TITLE class IO::Path::Win32
+
+=SUBTITLE IO::Path preloaded with IO::Spec::Win32
+
+    class IO::Path::Win32 is IO::Path { }
+
+This sub-class of L«C<IO::Path>|/type/IO::Path», preloaded with
+L«C<IO::Spec::Win32>|/type/IO::Spec::Win32» in the C<$.SPEC> attribute.
+
+=head1 Methods
+
+=head2 method new
+
+Same as L«C<IO::Path.new>|/type/IO::Path#method_new», except
+C<:$SPEC> cannot be set and defaults to
+L«C<IO::Spec::Win32>|/type/IO::Spec::Win32», regardless of the operating system
+the code is being run on.
+
+=end pod
+
+# vim: expandtab shiftwidth=4 ft=perl6