Avoid redundant parse_layout_conf() calls.
emirrordist.1: fix dup REPOSITORIES_CONFIGURATION
repoman: auto disable bad commit opts, bug 478156
Print more consistent error messages for entries in repos.conf.
Disable an error for entries from PORTDIR_OVERLAY.
RELEASE-NOTES: Next release is 2.1.13
RepoConfig: backward compat SYNC for mirrorselect

This restores SYNC support which was removed in commit
47e8d22dabf2197193c8f133698fb967afa560f4.
test_doebuild_fd_pipes: bsd compat
Disable usersandbox for tests.
Fix alias handling in missing masters warning.
Refer to /etc/portage/make.conf in messages.
make.globals: quote paths
make.conf.5: restore SYNC documentation

The SYNC variable is deprecated, but it is still supported, for
backward compatibility with mirrorselect --rsync.