Merge pull request #2369 in HDFFV/hdf5 from ~DYOUNG/vs2010:develop to develop
Merged per discussion with Elena.
* commit 'b4697f969295245840350e17d75d92a0fdd7e7a9':
Use HD prefix.
Delete unhelpful comment per Jordan's question.
Make sure that H5TS_thread_id() is available as either a function or a macro in all configurations.
Provide local copies of err(3)- and errx(3)-alike functions for Visual Studio compatibility.
Provide C99/POSIX.1 format strings PRI[doux]{8,16,32,64,MAX,PTR} on systems that are missing <inttypes.h>.
