isl_union_pw_*_extract: ignore parameters in space argument

This is similar to the change in 3c1f9ef (isl_union_map_extract_map:
ignore parameters in space argument, Thu Apr 12 14:08:39 2012 +0200).

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
doc: move isl_space operations to unary/binary operations sections

This is a continuation of the change in 4d45b72 (doc: move isl_local_space
operations to unary/binary operations sections, Tue Jan 28 14:36:14 2014 +0100).

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
doc: group dimension and tuple identifier functions

This further reorganizes the documentation along the same lines
as the previous commit.

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
doc: group function types and operations

This further reorganizes the documentation and should make it easier
to see the connections between the various object types.
It also makes it easier to describe new types of objects.

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
doc: document *_to_str functions

They are used by the Pyhton bindings.

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
doc: explain use of memory management annotation on strings

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
declare isl_space_to_str

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
declare isl_map_to_str

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
declare isl_multi_aff_to_str

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
declare isl_union_set_to_str

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
declare isl_union_map_to_str

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
declare isl_multi_aff_move_dims

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
declare isl_multi_*_flatten_range

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
declare isl_pw_multi_aff_reset_tuple_id

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
declare isl_union_pw_multi_aff_from_pw_multi_aff

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
declare isl_union_pw_multi_aff_extract_pw_multi_aff

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
declare isl_union_pw_multi_aff_gist

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
declare isl_union_pw_multi_aff_plain_is_equal

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
declare isl_union_pw_multi_aff_scale_val

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
declare isl_union_pw_multi_aff_coalesce

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>