[indicator-datetime] Attempt at build fix
[build-in-chroot.sh] Fix crash when multiple repos are used
[build-in-chroot.sh] Add ccache support
[build-in-chroot.sh] Finish ccache support
[build-in-chroot.sh] Create ccache cache directory if it does not exist
[build-in-chroot.sh] ccache cache directory needs to be created in the chroot too
[build-in-chroot.sh] Various ccache fixes
[build-in-chroot.sh] Support adding repos before [core]