Revert ld DIGEST support

Revert ld DIGEST support

This is a hopefully temporary reversion of new ld features for
embedded processors by Ulf Samuelsson, plus some followup patches.

Squashed together from the following:

Revert "lddigest 32-bit support and gcc-4 compile errors"
This reverts commit d7ee19be87110a8f5342cec6e323d83d01c641d1.

Revert "ld: Use correct types for crc64 calculations"
This reverts commit 9a534b9f8e3d0f3cdb5a20f19ff165693fbb84d2.

Revert "Re: DIGEST: testsuite"
This reverts commit c8e85484d8a0fe9f7b88e00a6b9ae63bcb53ba32.

Revert "Regen potfiles"
This reverts commit 4d98c966f8bf305ab25badd34cb295631873cf7c.

Revert "DIGEST: Makefile.*"
This reverts commit 78ef6ab03f56ce83a606d974bb8a9f34b5d6e0b7.

Revert "DIGEST: calculation"
This reverts commit 5243990191e683d5066d3dd622c76deaba0bf15c.

Revert "DIGEST: ldlang.*: add timestamp"
This reverts commit bd9466d4aa277a469a9d8b12f0a6e6fa51678e36.

Revert "DIGEST: ldmain.c"
This reverts commit c8f8653fa7eeb3dc0769ac23039eadb5c5f09dff.

Revert "DIGEST: ldgram.y"
This reverts commit d73c01be2669e9c5267fab669a269f95a32048c9.

Revert "DIGEST: ldlex.l"
This reverts commit 48b5163a9dd5759cc87171331bbd6e902c547b5a.

Revert "DIGEST: testsuite"
This reverts commit a4135d1a4886400ea29af2da782dd8dd40ccad23.

Revert "DIGEST: Documentation"
This reverts commit 3ec28966c3e4c63704212778f96c517cbf2e0090.

Revert "DIGEST: NEWS"
This reverts commit 099bf2927d446424e8585a60cf4ce63209999aa2.

Revert "DIGEST: LICENSING"
This reverts commit 5c8a0c6654fb55926985edf3b360b62d4f20691d.