[oe] deterministic OE builds - multiple providers

[Leon Woestenberg]

To illustrate the undeterministic points, this is what happens on one machine:

leon at axonnl-092 ~/sandbox/ixp4xx/openembedded $ bitbake -vvv
ixp4xx-kernel -c patch | grep Running
NOTE: Running task 1 of 3 (ID: 2,
/home/leon/sandbox/openembedded/tv.axon.openembedded/packages/linux/ixp4xx-kernel_2.6.19.bb,
do_fetch)
NOTE: Running task 1 of 3 (ID: 2,
/home/leon/sandbox/openembedded/tv.axon.openembedded/packages/linux/ixp4xx-kernel_2.6.19.bb,
do_fetch)
NOTE: Running task 2 of 3 (ID: 0,
/home/leon/sandbox/openembedded/tv.axon.openembedded/packages/linux/ixp4xx-kernel_2.6.19.bb,
do_unpack)
NOTE: Running task 1 of 3 (ID: 2,
/home/leon/sandbox/openembedded/tv.axon.openembedded/packages/linux/ixp4xx-kernel_2.6.19.bb,
do_fetch)
NOTE: Running task 2 of 3 (ID: 0,
/home/leon/sandbox/openembedded/tv.axon.openembedded/packages/linux/ixp4xx-kernel_2.6.19.bb,
do_unpack)
NOTE: Running task 3 of 3 (ID: 1,
/home/leon/sandbox/openembedded/tv.axon.openembedded/packages/linux/ixp4xx-kernel_2.6.19.bb,
do_patch)
NOTE: Running task 1 of 3 (ID: 2,
/home/leon/sandbox/openembedded/tv.axon.openembedded/packages/linux/ixp4xx-kernel_2.6.19.bb,
do_fetch)
NOTE: Running task 2 of 3 (ID: 0,
/home/leon/sandbox/openembedded/tv.axon.openembedded/packages/linux/ixp4xx-kernel_2.6.19.bb,
do_unpack)
NOTE: Running task 3 of 3 (ID: 1,
/home/leon/sandbox/openembedded/tv.axon.openembedded/packages/linux/ixp4xx-kernel_2.6.19.bb,
do_patch)

leon at axonnl-092 ~/sandbox/ixp4xx/openembedded $ bitbake -vvv
ixp4xx-kernel | grep Running
cp: cannot stat
`/home/leon/sandbox/openembedded/org.openembedded.dev/packages/linux/linux/defconfig':
No such file or directory
NOTE: Running task 218 of 234 (ID: 96,
/home/leon/sandbox/openembedded/org.openembedded.dev/packages/linux/linux_2.6.19.bb,
do_unpack)
NOTE: Running task 218 of 234 (ID: 96,
/home/leon/sandbox/openembedded/org.openembedded.dev/packages/linux/linux_2.6.19.bb,
do_unpack)