Fix a few bugs in the ruby bindings.
Fix a few bugs in the ruby bindings.

get, put, cond_put, search work.

tempbottle/HyperDex,UIKit0/HyperDex,tempbottle/HyperDex,hyc/HyperDex,vashstorm/HyperDex,jtk54/HyperDex,vashstorm/HyperDex,jtk54/HyperDex,tempbottle/HyperDex,cactorium/HyperDex,hyc/HyperDex,jtk54/HyperDex,UIKit0/HyperDex,jtk54/HyperDex,pombredanne/HyperDex,UIKit0/HyperDex,rescrv/HyperDex,UIKit0/HyperDex,rescrv/HyperDex,jtk54/HyperDex,pombredanne/HyperDex,rescrv/HyperDex,hyc/HyperDex,UIKit0/HyperDex,tempbottle/HyperDex,hyc/HyperDex,pombredanne/HyperDex,cactorium/HyperDex,vashstorm/HyperDex,jtk54/HyperDex,vashstorm/HyperDex,tempbottle/HyperDex,cactorium/HyperDex,rescrv/HyperDex,pombredanne/HyperDex,UIKit0/HyperDex,pombredanne/HyperDex,jtk54/HyperDex,cactorium/HyperDex,vashstorm/HyperDex,cactorium/HyperDex,hyc/HyperDex,hyc/HyperDex,cactorium/HyperDex,pombredanne/HyperDex,rescrv/HyperDex,rescrv/HyperDex,pombredanne/HyperDex,cactorium/HyperDex,rescrv/HyperDex,tempbottle/HyperDex,rescrv/HyperDex,UIKit0/HyperDex,cactorium/HyperDex,pombredanne/HyperDex,tempbottle/HyperDex,pombredanne/HyperDex,UIKit0/HyperDex,tempbottle/HyperDex,jtk54/HyperDex,jtk54/HyperDex,rescrv/HyperDex,cactorium/HyperDex,vashstorm/HyperDex,vashstorm/HyperDex,hyc/HyperDex,UIKit0/HyperDex,vashstorm/HyperDex,hyc/HyperDex,vashstorm/HyperDex,tempbottle/HyperDex