Revert "Replacement of isl_int by isl_val"

This reverts commit ea48ac017975b0f0d4bd1ebd4b25fc658ba5f033.

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	gcc/ChangeLog
	gcc/graphite-interchange.c
	gcc/graphite-poly.c
	gcc/graphite-sese-to-poly.c
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This reverts commit 429cca5154707b85df6b5b7a678441fdf8fd9b8a.

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	ChangeLog
	config/ChangeLog
	gcc/ChangeLog
	gcc/graphite-interchange.c
	gcc/graphite-poly.c
	gcc/graphite-sese-to-poly.c
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This reverts commit 761cc92f20841aa7242eb778cd7eef8102d8d7c2.

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This reverts commit c3ee9394a96df9f4a42f9b2c3f7283c72698eea1.

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Revert "[gcc/]"

This reverts commit 86e09dcd10e64cc31ac5f523abd3c2a35ace6e3c.

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This reverts commit b45f3643f7020936643762c689a126edcd4fc391.

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This reverts commit 20bfee3efdc94bba76df07a229f3df4a68518d27.

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This reverts commit b093324a3e2fa1c7ba300931184ae8d1e89bb51d.

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This reverts commit 3994abc45ba06b9d4337b39f7fbe75a6d2654e83.

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This reverts commit 4b662581b13306167053cf76734d68db21ca2c62.

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This reverts commit 1d56dd2b80f2a6268e4d197894736449b2ca9453.

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This reverts commit d36a0b38cb24cf9a26297aeba625f8bce44257db.

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This reverts commit 3f592a0790b991160e8323935f15f0dea12f277b.

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This reverts commit e0dff77be48dc5b4676c5a0a77633ce82b35879f.

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This reverts commit 327b81246d5a23ad7b196a4597ec1c7d2a56de53.

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	gcc/ChangeLog