Bug 40886: Add Arch instructions to README

                  libfile-copy-recursive-perl libfile-slurp-perl git \

                  mercurial uidmap

If you are running an Arch based system, you should be able to install them with:

# pacman -S perl-datetime perl-path-tiny perl-yaml perl-yaml-libyaml \

            perl-yaml-tiny perl-template-toolkit perl-io-captureoutput \

            perl-file-copy-recursive perl-string-shellquote \

            perl-sort-versions perl-data-uuid perl-data-dump perl-json \

            perl-digest-sha1 perl-io-all perl-file-slurp perl-sys-syscall \

            perl-parallel-forkmanager perl-xml-libxml perl-lwp-protocol-https

On Arch based systems you also need to generate some .ph files RBM expects:

	# cd /usr/include/sys; h2ph syscall.h

	# cd /usr/include/; h2ph asm/unistd.h asm/unistd_64.h bits/syscall.h

The build system is based on rbm, which is included as a git submodule

in the rbm/ directory. You can fetch the rbm git submodule by running

'make submodule-update'.