Handle -eaux plurals in makeplural/makesingular (pr #767 by entrez)
mdisplacem stoning and gloves had test backwards (pr #773 by entrez)
writing type-named scrolls (pr #551 by entrez)
+more cases where newcham() gives messages (pr #775 by copperwater)
Code Cleanup and Reorganization
add TT_NONE==0, renumber other u.utraptype values so that TT_BEARTRAP isn't 0
for Planes of Water and Air, save the air bubbles and clouds with the level
rather than as game state; affects wizard mode ^V and #wizmakemap
+switch to a flags arg on newcham() in place of a the pair of boolean args