Merge branch 'rpcxeth' into rpcfrontier

Conflicts:
	rpc/api.go

core/filter.go

@@ -46,7 +46,7 @@ func NewFilter(eth Backend) *Filter {
 
 // SetOptions copies the filter options to the filter it self. The reason for this "silly" copy
 // is simply because named arguments in this case is extremely nice and readable.
-func (self *Filter) SetOptions(options FilterOptions) {
+func (self *Filter) SetOptions(options *FilterOptions) {
 	self.earliest = options.Earliest
 	self.latest = options.Latest
 	self.skip = options.Skip

event/filter/eth_filter.go

@@ -48,7 +48,9 @@ func (self *FilterManager) InstallFilter(filter *core.Filter) (id int) {
 func (self *FilterManager) UninstallFilter(id int) {
 	self.filterMu.Lock()
 	defer self.filterMu.Unlock()
-	delete(self.filters, id)
+	if _, ok := self.filters[id]; ok {
+		delete(self.filters, id)
+	}
 }
 
 // GetFilter retrieves a filter installed using InstallFilter.