Merge all of my changes from merge-back-to-feature-vfd_swmr-attempt-1,

including the merge of `hdffv/hdf5/develop`, back to the branch that Vailin and
I share.

Now I need to put this branch on a fork with a less confusing name than
vchoi_fork!

config/cmake/CTestScript.cmake

@@ -72,7 +72,7 @@ set (CTEST_CMAKE_COMMAND "\"${CMAKE_COMMAND}\"")
 if (CTEST_USE_TAR_SOURCE)
   ## Uncompress source if tar or zip file provided
   ## --------------------------
-  if (WIN32)
+  if (WIN32 AND NOT MINGW)
     message (STATUS "extracting... [${CMAKE_EXECUTABLE_NAME} -E tar -xvf ${CTEST_DASHBOARD_ROOT}\\${CTEST_USE_TAR_SOURCE}.zip]")
     execute_process (COMMAND ${CMAKE_EXECUTABLE_NAME} -E tar -xvf ${CTEST_DASHBOARD_ROOT}\\${CTEST_USE_TAR_SOURCE}.zip RESULT_VARIABLE rv)
   else ()
@@ -101,6 +101,11 @@ endif ()
 include (ProcessorCount)
 ProcessorCount (N)
 if (NOT N EQUAL 0)
+  if (MAX_PROC_COUNT)
+    if (N GREATER MAX_PROC_COUNT)
+      set (N ${MAX_PROC_COUNT})
+    endif ()
+  endif ()
   if (NOT WIN32)
     set (CTEST_BUILD_FLAGS -j${N})
   endif ()