Switch dummy logic around to set cap_* bits during exec and set*uid based
on basic uid check.  Then check cap_* bits during capable() (rather than
doing basic uid check).  This ensures that capability bits are properly
initialized in case the capability module is later loaded.
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>