K 10
svn:author
V 2
ae
K 8
svn:date
V 27
2012-03-23T07:26:17.465107Z
K 7
svn:log
V 445
Check that scheme is not already registered. This may happens when a
KLD is preloaded with loader(8) and leads to infinity loops.

Also do not return EEXIST error code from MOD_LOAD handler, because
we have undocumented(?) ability replace kernel's module with preloaded one.
And if we have so, then preloaded module will be initialized first.
Thus error in MOD_LOAD handler will be triggered for the kernel.

PR:		kern/165573
MFC after:	3 weeks

END