extract amount of dropped weapon stack
remove some unused variables, comments
display amount of stack to be dropped
check if reading an item of type it_book
remove unneeded casts
Merge pull request #5189 from BevapDin/partial-weaopn-drop

Allow dropping parts of wielded stacks
Merge pull request #5194 from BevapDin/fix-saving-while-reading

Fix for #5191
Make poison and magic mushrooms not identifiable by examining without the survival skill.
Merge pull request #5202 from ianestrachan/harder-mushroom-identify

Special mushrooms no longer trivially identifiable
Merge branch 'master' of https://github.com/CleverRaven/Cataclysm-DDA into DinoCataclysm-update
Tweak.