updated ez-grammar-test to write temp files to current directory and delete them when finished
original commit: 89885b73d679759de9c62bab0b407318df123d6f
- added a cast to eliminate warnings in c/number.c
- fixed bug in Windows version of directory-separator-predicate in s/6.ss when path-* procedures are passed a path that is not a string.
- fixed bug in s/cp0.ss on Windows with $foreign-wchar?.
- fixed spelling of non-existent
original commit: dd1b741f7572cb0d5a6210c7c796aee7c4026040
