update to blt 0.6.0

[cyrush]

No description provided.

[cyrush]

• TODO: Remove commented old blt logic once the ci coast is clear.

[cyrush]

Need to understand the true min version of CMake now -- 3.9.6 is too old:

-- CMake Version: 3.9.6
-- CMake Configuration Types: Debug;Release;MinSizeRel;RelWithDebInfo
-- CMake Executable: C:/Program Files/CMake/bin/cmake.exe
-- Setting CMAKE_CXX_EXTENSIONS to OFF
-- Standard C++14 selected
-- MPI Support is ON
-- FindMPI Enabled  (ENABLE_FIND_MPI == ON)
-- Found MPI_C: C:/Program Files (x86)/Microsoft SDKs/MPI/Lib/x86/msmpi.lib  
-- Found MPI_CXX: C:/Program Files (x86)/Microsoft SDKs/MPI/Lib/x86/msmpi.lib  
-- BLT MPI Compile Flags:  
-- BLT MPI Include Paths:  C:/Program Files (x86)/Microsoft SDKs/MPI/Include
-- BLT MPI Libraries:      C:/Program Files (x86)/Microsoft SDKs/MPI/Lib/x86/msmpi.lib
-- BLT MPI Link Flags:     
-- MPI Executable:       C:/Program Files/Microsoft MPI/Bin/mpiexec.exe
-- MPI Num Proc Flag:    -n
-- MPI Command Append:   
CMake Error at blt/cmake/BLTInstallableMacros.cmake:456 (target_include_directories):
  Cannot specify include directories for imported target "mpi".
Call Stack (most recent call first):
  blt/cmake/BLTInstallableMacros.cmake:544 (blt_convert_to_system_includes)
  blt/cmake/BLTInstallableMacros.cmake:618 (blt_patch_target)
  blt/cmake/thirdparty/BLTSetupMPI.cmake:187 (blt_import_library)
  blt/cmake/BLTSetupTargets.cmake:67 (include)
  blt/cmake/SetupThirdParty.cmake:6 (include)
  blt/SetupBLT.cmake:130 (include)
  cmake/SetupBLT.cmake:40 (include)
  CMakeLists.txt:63 (include)
CMake Error at blt/cmake/thirdparty/BLTSetupMPI.cmake:195 (add_library):
  add_library cannot create ALIAS target "blt::mpi" because target "mpi" is
  IMPORTED.
Call Stack (most recent call first):
  blt/cmake/BLTSetupTargets.cmake:67 (include)

[cyrush]

cmake 3.14 -- also to old

-- CMake Version: 3.14.2
-- CMake Build Type: Debug
-- CMake Executable: /__w/1/s/uberenv_libs/spack/opt/spack/linux-ubuntu18.04-x86_64_v4/gcc-7.5.0/cmake-3.14.2-xy7srzpt5nkkuhbt2n4435b2xadqa3v6/bin/cmake
-- Setting CMAKE_CXX_EXTENSIONS to OFF
-- Standard C++11 selected
-- MPI Support is ON
-- FindMPI Enabled  (ENABLE_FIND_MPI == ON)
-- Found MPI_C: /usr/lib/x86_64-linux-gnu/libmpich.so (found version "3.1") 
-- Found MPI_CXX: /usr/lib/x86_64-linux-gnu/libmpichcxx.so (found version "3.1") 
-- Found MPI_Fortran: /usr/lib/x86_64-linux-gnu/libmpichfort.so (found version "3.1") 
-- Found MPI: TRUE (found version "3.1")  
-- BLT MPI Compile Flags:  
-- BLT MPI Include Paths:  /usr/include/mpich
-- BLT MPI Libraries:      /usr/lib/x86_64-linux-gnu/libmpich.so;/usr/lib/x86_64-linux-gnu/libmpichcxx.so;/usr/lib/x86_64-linux-gnu/libmpichfort.so
-- BLT MPI Link Flags:     SHELL:-Wl,-Bsymbolic-functions
-- MPI Executable:       /usr/bin/mpiexec
-- MPI Num Proc Flag:    -n
-- MPI Command Append:   
-- Using MPI Fortran header: mpif.h
-- OpenMP Support is ON
CMake Error at blt/cmake/thirdparty/BLTSetupMPI.cmake:195 (add_library):
  add_library cannot create ALIAS target "blt::mpi" because target "mpi" is
  imported but not globally visible.
Call Stack (most recent call first):
  blt/cmake/BLTSetupTargets.cmake:67 (include)
  blt/cmake/SetupThirdParty.cmake:6 (include)
  blt/SetupBLT.cmake:130 (include)
  cmake/SetupBLT.cmake:40 (include)
  CMakeLists.txt:63 (include)


-- Found OpenMP_C: -fopenmp (found version "4.5") 
-- Found OpenMP_CXX: -fopenmp (found version "4.5") 
-- Found OpenMP_Fortran: -fopenmp (found version "4.5") 
-- Found OpenMP: TRUE (found version "4.5")  
-- OpenMP Compile Flags: -fopenmp
-- OpenMP Link Flags:    -fopenmp
CMake Error at blt/cmake/thirdparty/BLTSetupOpenMP.cmake:60 (add_library):
  add_library cannot create ALIAS target "blt::openmp" because target
  "openmp" is imported but not globally visible.
Call Stack (most recent call first):
  blt/cmake/BLTSetupTargets.cmake:78 (include)
  blt/cmake/SetupThirdParty.cmake:6 (include)
  blt/SetupBLT.cmake:130 (include)
  cmake/SetupBLT.cmake:40 (include)
  CMakeLists.txt:63 (include)

[cyrush]

• Note: gtest vs python fix requires BLT PR and new BLT release.

But we are now using a commit off of BLT develop, we can switch to 0.6.1 when it is released.

[cyrush]

merging, we will do 0.6.1 blt change later.