ADJOINTS+EVENTS: Revaluate the previous event function residual after a postevent call.

Some states might get changed by the postevent user callback routine. Hence, the event function
residual is re

ADJOINTS+EVENTS: Revaluate the previous event function residual after a postevent call.

Some states might get changed by the postevent user callback routine. Hence, the event function
residual is re-evaluated immediately after a call to postevent and this residual will be the
"previous step event residual" when TS completes the next step.

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ADJOINTS+EVENTS: Added a flag to the postevent function to distinguish forward and adjoint solves.

Merge branch 'master' into barry/saws-options-merge-master

Totally confusing manual merge, could be wrong

Conflicts:
include/petscoptions.h
src/dm/impls/da/dacreate.c
src/sys/objects/aoptions.c

Merge branch 'master' into barry/saws-options-merge-master

Totally confusing manual merge, could be wrong

Conflicts:
include/petscoptions.h
src/dm/impls/da/dacreate.c
src/sys/objects/aoptions.c
src/sys/threadcomm/interface/threadcomm.c

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Merge branch 'master' into pr252/dmay/PetscViewerBinarySkipHeaderVecViewLoad
Manual merge of makefile

Conflicts:
src/sys/classes/viewer/examples/tutorials/makefile

Merge branch 'barry/remove-unneeded-paren-petscmalloc'

Conflicts:
src/mat/impls/baij/seq/baij.c

convert some PetscMalloc() to PetscMalloc1()
remove unneeded () in first argument to PetscMalloc/Calloc1()
fixes for MATLAB examples

Merge branch 'master' of bitbucket.org:petsc/petsc

Merge branch 'shri/ts-events'

Merge branch 'master' into prbrune/snes-fascontinuation

* master: (855 commits)
fix for moab example had wrong blocksize of mapping
docs:remove src/docs/doxygen/manual [per Barry's instructions]

Merge branch 'master' into prbrune/snes-fascontinuation

* master: (855 commits)
fix for moab example had wrong blocksize of mapping
docs:remove src/docs/doxygen/manual [per Barry's instructions]
gfortran: remove 132 char limit from f90 free-form
SNES: Set up matrix-free *after* copying the user Jacobian to snes->pc
DMPlex-Gmsh: Use trueNumCells when building the coordinate section
Sys: Got guard logic reversed
Sys: The #define guard for PetscMalloc*() must match the one for PetscFree*()
PetscFV: I hate fucking complex
removed ltog scatter from DMDA since functionality can be obtained with gtol scatter and less memory
fix test of DMLocalToGlobalBegin/End and add actual test cases
improve object memory logging for DA, ISLocalToGlobal and ISBLOCK
lower high water mark of constructing parallel scatter by allocating only as much room in svalues as needed
owner in VecScatter construction is the rank, therefor can use PetscMPIInt to hold it do not PetscInt
another reuse of allocated array in 2d/3d DMDA create
improved high water mark of DMDASetups by implementing and using PETSC_USE_POINTER for ISCreateBlock()
PetscFV: Another complex fix
DMPlex+TS: Fixing types
ISIdentity() was wrong for block IS! Indices are NOT scaled by bs
PetscFV: Straighten out complex types
TS ex11: Fix casts and remove unused variable
...

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Merge branch 'master' into barry/saws-options

Merge branch 'master' into stefano_zampini/pcbddc-multilevel-improvement

Conflicts:
src/docs/website/documentation/changes/dev.html
src/ksp/ksp/examples/tutorials/ex59.c
src/ksp/pc/impls/bddc/bdd

Merge branch 'master' into stefano_zampini/pcbddc-multilevel-improvement

Conflicts:
src/docs/website/documentation/changes/dev.html
src/ksp/ksp/examples/tutorials/ex59.c
src/ksp/pc/impls/bddc/bddcprivate.c

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TSEvent: Avoid re-detection of the same event when previous function value is exactly zero.

If a previous event results in an event function value of exactly zero, then the same event
was being dete

TSEvent: Avoid re-detection of the same event when previous function value is exactly zero.

If a previous event results in an event function value of exactly zero, then the same event
was being detected in the next interval. This was because the check for event detection was
based only on the change of function sign. Added an extra guard that checks if the previous
function value is zero and subsequently avoids re-detecting of the previous event.
Observed this behavior in time-based events (t - t_event_time = 0).

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Merge remote-tracking branch 'origin/master' into feature-dmmoab

Merged petsc/petsc into master

Merge branch 'shri/ts-events'

tsevent: Fixes needed after merging master.

ts-events: Set event direction and termination flag when the event is registered.

Also, got rid of ugly long conditional for event checking.

Fixed the check for locating the event interval.

TSEvent: fix datatypes in MPI_Allreduce

tsevent: c89 syntax fix for windows build

tsevent: c++/complex compile fixes

Moved TSEvent code to a seperate folder.