Bug 20837: Use ReservesControlBranch to determine holdability of items

Bug 20837: Use ReservesControlBranch to determine holdability of items

To test:
 1 - Set a default holds plicy for an item type as 'from home library'
 2 - Set CircControl to 'logged in library'
 3 - Log in as staff from a library without the rule set
 4 - Note you can set holds for patrons of any library on items of type
above
 5 - Toggle ReservesControlBranch and note that nothing changes
 6 - Toggle CircControl and note some combinations don't allow holds
 7 - Apply patch
 8 - Toggle ReservesControlBranch and note that holdability is affected
 9 - Toggle CircControl and note holdability does not change
10 - Read the note on admin/smartrules.pl and confirm it makes sense

Signed-off-by: Liz Rea <wizzyrea@gmail.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>