[mer-sdk-chroot] Document the bind mounts and allow home to be shared - useful for setting up an ubuntu chroot inside the SDK for android building

Signed-off-by: David Greaves <david.greaves@jollamobile.com>
[mer-sdk-chroot] pass SSH_AGENT_PID and SSH_AUTH_SOCK through to the sdk

Signed-off-by: David Greaves <david@dgreaves.com>
[mer-sdk-chroot] no longer need an active_chroot_list

Signed-off-by: David Greaves <david@dgreaves.com>
[mb2] Add installdeps option

installdeps option runs a "zypper ref" for the given target
and installs any missing build dependencies.

Original patch by Thomas Perl

Signed-off-by: Juha Kallioinen <juha.kallioinen@jolla.com>
[mer-sdk-chroot] fix passing SSH_AUTH_SOCK

Signed-off-by: Juha Kallioinen <juha.kallioinen@jolla.com>
Merge pull request #13 from sailfish-sdk/mer-tools-sync

Mer tools sync