added 3 basic string operations to tiny-lib
added link procedure; procedures using default-* should use current-* instead
added some list functions to tiny
some output directory messing
added link-flat/link-incremental
information-related arguments go last
complete implementation of cond-expand for config.scm dependencies
agreeing that dir is better than directory
Gambit version bump
cond-expand-features
OSX now doesn't support no-unwind?
fix free strings in cc/ld options for config.scm
no different flags for OSX necessary