cleaning up the binaries in the coming Frescobaldi flatpak package

[Federico Bruni]

I'm working on a Linux flatpak package for Frescobaldi which will 
bundle LilyPond stable (currently 2.20).

In order to reduce the size of the final flatpak, I want to remove the 
binaries which are not needed to _run_ lilypond, lilypond-book or any 
other lilypond script.
Some binaries are created while building lilypond dependencies. I'm 
concerned in particular with the bigger ones from ghostscript. Do I 
really need gpcl6 and gxps?

Thanks in advance
Federico

$ ls -lhS /app/bin
totale 75M
-rwxr-xr-x 4 fede fede 27M 1 gen 1970 gs
-rwxr-xr-x 4 fede fede 25M 1 gen 1970 gpcl6
-rwxr-xr-x 4 fede fede 18M 1 gen 1970 gxps
-rwxr-xr-x 4 fede fede 5,0M 1 gen 1970 lilypond
-rwxr-xr-x 4 fede fede 123K 1 gen 1970 musicxml2ly
-rwxr-xr-x 4 fede fede 59K 1 gen 1970 pango-view
-rwxr-xr-x 4 fede fede 55K 1 gen 1970 t1mac
-rwxr-xr-x 4 fede fede 52K 1 gen 1970 t1asm
-rwxr-xr-x 4 fede fede 51K 1 gen 1970 t1unmac
-rwxr-xr-x 4 fede fede 51K 1 gen 1970 t1disasm
-rwxr-xr-x 4 fede fede 47K 1 gen 1970 t1ascii
-rwxr-xr-x 4 fede fede 47K 1 gen 1970 t1binary
-rwxr-xr-x 4 fede fede 41K 1 gen 1970 abc2ly
-rwxr-xr-x 4 fede fede 36K 1 gen 1970 midi2ly
-rwxr-xr-x 4 fede fede 34K 1 gen 1970 etf2ly
-rwxr-xr-x 4 fede fede 28K 1 gen 1970 lilypond-book
-rwxr-xr-x 6 fede fede 19K 1 gen 1970 smtpd.py
-rwxr-xr-x 4 fede fede 15K 1 gen 1970 QtWebEngineProcess
-rwxr-xr-x 4 fede fede 15K 1 gen 1970 fontforge
-rwxr-xr-x 4 fede fede 15K 1 gen 1970 pango-list
-rwxr-xr-x 4 fede fede 15K 1 gen 1970 python2.7
-rwxr-xr-x 4 fede fede 15K 1 gen 1970 guile
-rwxr-xr-x 4 fede fede 13K 1 gen 1970 convert-ly
-rwxr-xr-x 6 fede fede 13K 1 gen 1970 fontlint
-rwxr-xr-x 4 fede fede 9,1K 1 gen 1970 lilymidi
-rwxr-xr-x 4 fede fede 8,9K 1 gen 1970 guile-config
-rwxr-xr-x 4 fede fede 8,0K 1 gen 1970 lilysong
-rwxr-xr-x 6 fede fede 5,4K 1 gen 1970 lprsetup.sh
-rwxr-xr-x 6 fede fede 5,3K 1 gen 1970 lilypond-invoke-editor
-rwxr-xr-x 6 fede fede 4,1K 1 gen 1970 unix-lpr.sh
-rwxr-xr-x 6 fede fede 3,4K 1 gen 1970 fontimage
-rwxr-xr-x 6 fede fede 2,9K 1 gen 1970 guile-snarf
-rwxr-xr-x 6 fede fede 2,9K 1 gen 1970 guile-tools
-rwxr-xr-x 6 fede fede 2,7K 1 gen 1970 ps2epsi
-rwxr-xr-x 6 fede fede 2,6K 1 gen 1970 sfddiff
-rwxr-xr-x 6 fede fede 1,1K 1 gen 1970 ps2pdfwr
-rwxr-xr-x 6 fede fede 1007 1 gen 1970 dvipdf
-rwxr-xr-x 6 fede fede 951 1 gen 1970 frescobaldi
-rwxr-xr-x 6 fede fede 909 1 gen 1970 pdf2ps
-rwxr-xr-x 6 fede fede 698 1 gen 1970 pdf2dsc
-rwxr-xr-x 6 fede fede 669 1 gen 1970 ps2ps2
-rwxr-xr-x 6 fede fede 647 1 gen 1970 ps2ps
-rwxr-xr-x 6 fede fede 639 1 gen 1970 eps2eps
-rwxr-xr-x 6 fede fede 631 1 gen 1970 ps2ascii
-rwxr-xr-x 6 fede fede 516 1 gen 1970 pfbtopfa
-rwxr-xr-x 6 fede fede 498 1 gen 1970 pf2afm
-rwxr-xr-x 6 fede fede 404 1 gen 1970 pphs
-rwxr-xr-x 6 fede fede 395 1 gen 1970 printafm
-rwxr-xr-x 6 fede fede 353 1 gen 1970 gslj
-rwxr-xr-x 6 fede fede 352 1 gen 1970 gsdj
-rwxr-xr-x 6 fede fede 352 1 gen 1970 gsdj500
-rwxr-xr-x 6 fede fede 350 1 gen 1970 gsbj
-rwxr-xr-x 6 fede fede 350 1 gen 1970 gslp
-rwxr-xr-x 6 fede fede 277 1 gen 1970 gsnd
-rwxr-xr-x 6 fede fede 272 1 gen 1970 ps2pdf
-rwxr-xr-x 14 fede fede 217 1 gen 1970 pip
-rwxr-xr-x 14 fede fede 217 1 gen 1970 pip2
-rwxr-xr-x 14 fede fede 217 1 gen 1970 pip2.7
-rwxr-xr-x 6 fede fede 215 1 gen 1970 ps2pdf12
-rwxr-xr-x 6 fede fede 215 1 gen 1970 ps2pdf13
-rwxr-xr-x 6 fede fede 215 1 gen 1970 ps2pdf14
-rwxr-xr-x 6 fede fede 179 1 gen 1970 ly-server
-rwxr-xr-x 6 fede fede 165 1 gen 1970 ly
lrwxrwxrwx 1 fede fede 9 20 ott 21.52 python2 -> python2.7
lrwxrwxrwx 1 fede fede 7 20 ott 21.52 python -> python2