Someone screwed up

Hg-commit: 7bf8732a7d0d2251888fc71fd59d2a9260aeccca

Added new line searches to the VI solvers

Hg-commit: 6a44ff936e5a659c9d2954305f893c0a5c57878f

Fixed VIRSAUG for new SNES function pointers

Hg-commit: de2f499220a4247839a2d5238c3714abb832a3d1

Refactor SNES DM infrastructure

The residual and Jacobian function pointers are now stored in a managed
context on the DM. Coarsening of this context is handled by a
DMCoarsenHook, so the coarse lev

Refactor SNES DM infrastructure

The residual and Jacobian function pointers are now stored in a managed
context on the DM. Coarsening of this context is handled by a
DMCoarsenHook, so the coarse level DM automatically has function
pointers for residual evaluation. The SNESDM context (attached to a DM)
has copy-on-write semantics for all DMs other than the one it was
originally created on. That means that changes to the function pointers
from the fine level are automatically propagated unless a coarse level
is changed manually.

Hg-commit: ce0066853e1ef4402603a33070cb3bfd75c87f86

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DM computes variable bounds for SNESVI.

Hg-commit: ce166067903bacf34e561bc2e6893236d6c213a7

Add references for SNESVISS and SNESVIRS.

Hg-commit: b31388b8e95ec4f2e52e5490e1584ec1c2f673ae

Mass revert file modes that were made executable in f6e61ee9c329

Hg-commit: 116d90d0b66125cee0db3e7351047057e756baf5