Added handling for item flags when loading from json files.
Fixed jsonized items not showing up in wish menu. Not the best fix - better alternatives appreciated.
Updated Makefile to set minimum OS X version to 10.6
advanced inventory: Display weight and volume for held items
Merge pull request #765 from InfernoZeus/mac-compile-fix

Updated Makefile to set minimum OS X version to 10.6
Merge pull request #764 from GlyphGryph/flags_to_item_factory

Flags to item factory
Merge PR #767 - advanced inventory weight/volume
Right-align the advanced inventory volume