fatsort: update to 1.6.4.625.

[tibequadorian]

General

• This is a new package and it conforms to the quality requirements

Have the results of the proposed changes been tested?

• I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
• I generally don't use the affected packages but briefly tested this PR

[tibequadorian]

test fails because ISO-8859-1 locale is not enabled

[Johnnynator]

You can disable the mentioned check in pre_check (the ts_amd64 is always used in our setup)

pre_check() {  
	vsed -e '/tc_pos_char_enc_iso8859-1/d' \   
		-i tests/ts_amd64
}

[tibequadorian]

@Johnnynator thank you