[PATCH] deal correctly with qualifiers on arrays
* new helper: examine_pointer_target(). Examine target, find address_space
et.al. If the target is SYM_NODE - merge it, etc.
* new helper: target_qualifiers(). Pointers to any array are considered
as pointers to unqualified type as far as implicit conversions are
concerned; handle that right.
* SYM_TYPEOF can be handled sanely now: don't copy the node, just convert
SYM_TYPEOF to SYM_NODE and examine that.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>