asciidoc: add cleanspaces option to remove extra spaces #933

	# This workflow will build po4a on linux using Module::Build
	name: Build on Linux CI

	on:
	push:
	branches:
	- '*'
	tags-ignore:
	- '*'
	pull_request:

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3
	- name: Install Debian dependencies
	run: \|
	sudo apt update
	sudo apt install -y liblocale-gettext-perl libtext-wrapi18n-perl libunicode-linebreak-perl libpod-parser-perl libtest-pod-perl libyaml-tiny-perl libsyntax-keyword-try-perl
	sudo apt install -y cpanminus gettext docbook-xml docbook-xsl docbook xsltproc
	sudo apt install -y texlive-binaries texlive-latex-base opensp libsgmls-perl
	- name: Install CPAN dependencies
	run: \|
	cpanm Locale::gettext
	cpanm http://search.cpan.org/CPAN/authors/id/R/RA/RAAB/SGMLSpm-1.1.tar.gz
	cpanm Text::WrapI18N
	cpanm Unicode::GCString

	cpanm -v --installdeps --notest .

	- name: Build
	run: \|
	perl Build.PL
	COLUMNS=120 ./Build verbose=1

	- name: Test
	run: ./Build test verbose=1

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