oe-init-build-env*: Allow $OEROOT to be predefined
The current implementation of oe-init-build-env and
oe-init-build-env-memres requires that they are sourced from the
directory that will be known as $OEROOT. This makes it hard to write a
wrapper script with the same name as the original OE script which,
e.g., sources the original OE script from a sub-directory.
With this change, $OEROOT can be predefined when oe-init-build-env or
oe-init-build-env-memres is sourced, allowing the original OE scripts
to be anywhere.
Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
