To reflect the new output directory hierachy rename the Makefile variable
TOOL_BUILD_DIR to TOOLCHAIN_DIR.
Signed-off-by: Michael Roth <mroth@nessie.de>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
-Allow user to specify custom ccache location.
This allows you to build a toolchain and put it on
an nfs share so other people can use the toolchain
without errors about the ccache dir missing.