Improve save and reload towards global scan (see: #62).

Closes #40 and #54

See merge request !106

get_usable_inames_for_conditional(): Fix inames finding in the case

Closes #65

See merge request !112

Conflicts:
	test/test_loopy.py

containing subkernel. Rename prev_sched_index to sched_item_index. Fix
a case where the loop would exit too late.

_UniqueVarNameGenerator: Fix O(n**2) behavior by keeping track of the

Closes #25

See merge request !111

get included in dependency calculcations.

Add a save and reload test that uses base_storage.

that we are outside a subkernel (closes #65).

array prefixes as they are aded to the set.

Closes #25 on gitlab
Depends on inducer/pytools!2 on gitlab

Add val_type to ToCountMap, fix div computation in get_simple_strides, consider assumptions in precompute

See merge request !109

* Closes #40, by changing the way storage is computes for save and
reload by using the tags of the accessing instructions, not the inames.
* Allow a single representative per base_storage equivalence class to
be saved and reloaded (see also: #42).
* Removes InstructionQuery class from schedule tools.

Still needs: tests

Tuple typed reductions

Closes #32

See merge request !103

Throw error on empty domains in min/max

See merge request !104

Add global barrier helper functions to loopy

See merge request !101

Nosync updates

Closes #60 and #51

See merge request !102

* Make *add_nosync* visible in the loopy docs.

type. Now, the argument to a reduction can be either a scalar or a
tuple.

This reverts commit 7913e68a.