hold_stalling.hard typo

There is a YAOUS setting for circ.hold_stalling_hard "Hard stalling interval" that doesn't seem like it is used, but there is an inconsistency that may cause problems if it ever does get used.

The name for the setting is formatted differently than the name for the soft stalling. The hard stalling ends with an underscore "_hard" while the soft stalling setting ends with a period ".soft".

http://git.evergreen-ils.org/?p=Evergreen.git;a=blob;f=Open-ILS/src/sql/Pg/950.data.seed-values.sql#l3085
3085 ,( 'circ.hold_stalling.soft', 'holds',
3086 oils_i18n_gettext('circ.hold_stalling.soft',
3087 'Soft stalling interval',
3088 'coust', 'label'),
3089 oils_i18n_gettext('circ.hold_stalling.soft',
3090 'How long to wait before allowing remote items to be opportunistically captured for a hold. Example "5 days"',
3091 'coust', 'description'),
3092 'interval', null)
3093
3094 ,( 'circ.hold_stalling_hard', 'holds',
3095 oils_i18n_gettext('circ.hold_stalling_hard',
3096 'Hard stalling interval',
3097 'coust', 'label'),
3098 oils_i18n_gettext('circ.hold_stalling_hard',
3099 'Holds: Hard stalling interval',
3100 'coust', 'description'),
3101 'interval', null)

Then in Open-ILS/src/perlmods/lib/OpenILS/Const.pm
http://git.evergreen-ils.org/?p=Evergreen.git;a=blob;f=Open-ILS/src/perlmods/lib/OpenILS/Const.pm
A constant is defined based on the wrong name.

  86 econst OILS_SETTING_HOLD_SOFT_STALL => 'circ.hold_stalling.soft';
  87 econst OILS_SETTING_HOLD_HARD_STALL => 'circ.hold_stalling.hard';

Changing the library setting would probably be the cleanest fix, but since this value isn't used, it is a low priority. I just wanted to document it in case that feature ever does get implemented.. although I'm not sure what a hard stalling interval would mean.

This was seen in 2.8.2 and master.
Josh