Use more explicit names (prefixed with my)

Signed-off-by: Cédric Marie <cedric@hjuvi.lautre.net>

scripts/tag-sieve → scripts/myaudiotags

 #!/bin/sh
 
-# tag-sieve - Clean audio tags
+# myaudiotags - Clean audio tags
 # This file is part of Painted Shell - Shell configuration and scripts.
 #
 # Written in 2014-2018 by Cédric Marie

scripts/freeze-dry → scripts/myflac2mp3

 #!/bin/sh
 
-# freeze-dry - Convert FLAC files to MP3 files
+# myflac2mp3 - Convert FLAC files to MP3 files
 # This file is part of Painted Shell - Shell configuration and scripts.
 #
 # Written in 2014-2018 by Cédric Marie

scripts/grepar → scripts/mygrepar

 #!/bin/sh
 
-# grepar - Grep recursively in archives
+# mygrepar - Grep recursively in archives
 # This file is part of Painted Shell - Shell configuration and scripts.
 #
 # Written in 2013-2018 by Cédric Marie

scripts/rmbg → scripts/myrmbg

 #!/bin/sh
 
-# rmbg - Delete directories in the background
+# myrmbg - Delete directories in the background
 # This file is part of Painted Shell - Shell configuration and scripts.
 #
 # Written in 2014-2018 by Cédric Marie