Fixes build and tests on Windows

[kennyweiss]

Summary

• This PR is a bugfix for the build on Windows
• It fixes:
  • the MIR build, which required some exports for static members
  • MIR tests that depend on the compile time path to the data directory
  • A bug with the quicksort algorithm for some data orderings and adds a unit test
  • Some quest tests when mfem does not have MPI
  • Some quest lambdas that take a constexpr -- MSVC appears to require static constexpr w/ c++14. This might be relaxed in c++17
• I also cleaned up/updated some sidre::Group implementations to use the iterator interface while working on sidre test bugfixes

Status:

• The code + tests + examples currently build w/ our msvc configuration
• The following tests are still currently failing:
  • 85 - sina_Document (Failed)
  • 86 - sina_ID (Failed)
  • 87 - sina_Record (Failed)
  • 88 - sina_Relationship (Failed)
  • 89 - sina_Run (Failed)
  • 170 - sidre_read_write_userdefined_data (Failed)
  • 171 - sidre_mfem_datacollection (Failed)
• The sina failures appear to be related to data is moved. I will try to fix w/ ubsan
• The sidre failures appear to be related to MFEMSidreDataCollection::LoadExternalData(). Perhaps related to changes from:
  • Fix MFEMSidreDataCollection::LoadExternalData and add test cases for various LoadExternalData functions #1473
  • Allow IOManager to load external data at specific locations in Sidre hierarchy. #1479
  • Piecewise version of loadExternalData #1494

[kennyweiss]

/style