Bump version to 1.0.4 and FLEVEL to 164 #1890

Job	Run time
check (libclamav, (iana_cctld\|bytecode_api_\|bytecode_hooks\|rijndael\|yara\|inffixed\|inflate\|queue\|t...	1s
check (libfreshclam)	13s
check (clamav-milter)	11s
check (clambc)	12s
check (clamconf)	13s
check (clamd)	14s
check (clamdscan)	13s
check (clamdtop)	15s
check (clamonacc, (c-thread-pool\|fts\|priv_fts))	15s
check (clamscan)	18s
check (clamsubmit)	2s
check (freshclam)	11s
check (libfreshclam)	12s
check (common)	1s
check (sigtool)	15s
check (examples)	13s
check (win32/compat)	16s
	3m 15s

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