ncftp: fix build failures with ccdv

ccdv is an internal tool to reduce the deluge Make output
to make finding actual problems easier and it is intended
to be invoked from Makefiles only, it doesn't work for the
cross compiling, so compile it with $BUILD_CC and
corresponding CFLAGS.

And I think we don't need to enable it by default to
reduce our Make output, so add a PACKAGECONFIG for it
but disable it by default.

Signed-off-by: Jackie Huang <jackie.huang@windriver.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Joe MacDonald <joe_macdonald@mentor.com>