remove all shiftnz, shiftpd and shiftinblocks

Hg-commit: f1e8178d024009572475a411c3fa40df12abb777

remove PCFactorSetShiftNonzero(), PCFactorSetShiftPd() and PCFactorSetShiftInBlocks()

Hg-commit: 7003e666813cb29616df228e25ece92955c33033

continue replacing PCFactorSetShiftxxx() with PCFactorSetShiftType() and PCFactorSetShiftAmount()

Hg-commit: b64c17c9fbc009eefb8072446fc4ef9e80146566

replace shiftpd, shiftnz, shiftinblocs with shifttype and shiftamount
only partially done for seqaij format.

Hg-commit: e8ba899db4d012e7c2e1e0b2afe23bf80c595415

Add PCFactorSetShiftType() and PCFactorSetShiftAmount()

Hg-commit: 11b2d9da5dd711b89de2445adb08f29eaa980990

Bugfix for shift schemes used in numerical factorization.
Turn-off default shiftnz/shiftpd in icc and ilu until a better design is determined
Only one of shiftnz, shiftpd and shiftinblocks is allowed

Bugfix for shift schemes used in numerical factorization.
Turn-off default shiftnz/shiftpd in icc and ilu until a better design is determined
Only one of shiftnz, shiftpd and shiftinblocks is allowed to be turned on.

Hg-commit: 9fab294fdd73e23ef93a1c65bfd18772aaab2b91

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dropped the use from PCFactorSetUseDropTolerance() and -pc_factor_use_drop_tolerance

Hg-commit: 38537a65d99317cb3764af5eac895154a7e2f605

fix extern "C" error icc.c

Hg-commit: 36824b7f3a6877fb76d2b75cd2cf21d6835aa7a4

Fixed missing extern C

Hg-commit: b10df184561da314aea2bb7b4d4703a833d1316d

added support for drop tolerance to PCICC
first cut of Bas ICC, not yet completely working.

Hg-commit: c81908c7b1f7211c4c768df4016c15cc490189b8

removed public interface for MatILUDTFactor*, this will now be handled by regular MatILU/ICCFactor* interface

Hg-commit: b130c3ab430985359fffc88a9c93110f07b98d13

basic running of bas factorization
typo in hdf5 manaul page
credit Dave May for the GCR

Hg-commit: a91a506f6e78f1175807298f0b0acb3a753ac329

correcting of 0 assignments to double to be 0.

Hg-commit: 4e8d3c66ce68ac50361b8dc9292a6438842e1543

removed mention of MPIRowbs from icc.c and ilu.c

Hg-commit: 4abc7f8714c86445dcfb82dd3dd455c27f74d8cf

removed PETSC_ARCH/conf/base and
added support for not setting PETSC_ARCH and PETSC_DIR with --prefix option

Hg-commit: e478f4df238e5763b64567336d7cf94ca5d89d58

merge

Hg-commit: b723e36a33b01b236644b171b2ed49e502be881c

remove execute permissions from sourcefiles

Hg-commit: 51e6d6c8360e0f44051ea90e634ee2c0b115205d

factor common options for PCSetFromOptions_ILU(), LU() etc into PCSetFromOptions_Factor()
rename PCFactorSetPivoting -> PCFactorSetColumnPivot

Hg-commit: 9fc226d4711fc60f38c040374fd14f9fe3620f06

add option for -pc_factor_shift_in_blocks

Hg-commit: 58cecc60488241bec9384237694d606c25f21301

added university of florida sparse matrix collection reference

Hg-commit: c64940800a9b9c6ee85e50396354778dc8b71703

fix memory leak in PCDestroy_ILU

Hg-commit: 085c9049d43f7be5073ff42d50f6f93981a76afd

add mat_solver_package option to ilu - prepare for adding ilu into the superlu interface

Hg-commit: 412e9c77e9f2a5b5eb96572e90539baa9a056496

add support of '-pc_factor_reuse_fill' for iludt on seqaij matrix

Hg-commit: bbbef9fecfdeb77ae01b1dc605e320edd855eb6e

merge MatILUDTFactorSymbolic() and MatILUDTFactorNumeric() into MatILUDTFactor()

Hg-commit: 542666db30301dde69df49d262ed2c65e908eb7a

fixed two errors introduced when changing PetscOptionsHasName to PetscOptionsGetTruth()

Hg-commit: a8176fa5bda99bab0dbeaf44fbb1e40534c57e0b