cmake: use gnu99 standard
log: remove race in eblob_dump_id_len()
log: simplified logging

Now that we have macro-based eblob_dump_id we can simplify some code
paths.
blob: switch from GNU99 [0] array to C99 []
tests: stress: fail fast on invalid arguments
tests: stress: align items_num on threads_num boundary
tests: stress: bump test version
tests: stress: print test version on start
blob: use 0xhex format for flags
codespell: comment fixes
log: introduce new log level SPAM
log: removed double 'endl' in log msg
log: less verbose logging
mobjects: fixed return code after base creation fail
mobjects: hint unsorted fd too
defrag: fixed race between defrag and base addition
data-sort: fixed assignment before check
blob: explicitly fix aliasing problems
cmake: do not link with dl in case of *SAN
cmake: removed unneeded BSD bits