[bangify HSpace cntr
Helmut Grohne <grohne@cs.uni-bonn.de>**20150302091640
 Ignore-this: e3995dc17df80879d3554c54603c075c
 
 This parameter consumed considerable memory (>10%) for our failing examples as
 can be seen in various heap profiles (e.g. concaT):
  -hc: incCntr >25%
  -hr: incCntr >25%
  -ht: Int >25%
] hunk ./src/Igor2/Data/HypoSpace.hs 28
-data HSpace = HS { cntr :: Int
+data HSpace = HS { cntr :: !Int