Comment 6 for bug 988870

I was wrong about the return logic: A comination of "unless" and "and" seems not possible. So I have replaced the existing return line by the following two:
return=skipped when economy needs thatchreed
return=skipped unless economy needs cloth

First, the weaving mill checks whether the economy needs thatch reed. If there is too little, it will skip.
If the economy has enough cloth, it will skip too.

I have seperated the "economy needs thatchreed" part from the "not economy needs cloth" part because I think that if both are missing, no cloth should be produced (I consider thatch reed to be more important).

Nevertheless, the default target quantity should be changed. I think 20 thatch reed and 20 cloth are a good values, then the player always has at least 20 of both in his stock, which should be enough.