Merge pull request #2464 in HDFFV/hdf5 from ~BYRN/hdf5_adb:develop to develop
* commit '27b23c8d52e89e9ce15dc9cb9685be85793a5d82':
Add extensive warnings to tools executables
Reorg comments
Correct warning flag form
Because of tools macro, this needs to be a warning
unused set-variable in macro
Fix Werror issues in JNI and tools
TRILAB-192 fix JNI shadow warning
TRILAB-192 restrict extensive warnings to libraries
TRILAB-192 add release note
TRILAB-192 Identify warnings that fail as errors
Correct syntax
Update CMake compiler flags to use same set of warnings
Allow use of INTEL icl/icl++ for clang
