Ticket #4619: (autogen.sh) - improve creation of POTFILES.in #146

Job	Run time
call-build-fedora / build-fedora	1m 50s
call-build-alpine / build-alpine	2m 15s
call-build-freebsd / build-freebsd	2m 58s
call-build-macos / build-macos	1m 31s
call-build-ubuntu / build-ubuntu	4m 11s
call-build-solaris / build-solaris	7m 21s
	20m 6s

Provide feedback