Short-term:

<        done > compile and run on Windows (unit tests + trqt)
<        done > compile and run on 32-bit systems (unit tests) [FreeBSD 9.2, Windows 8.1, XUbuntu 13.10, Debian GNU/Hurd 2013, Haiku R1a4.1]
<        done > add unit tests for file.h functions
<        done > add asserts to each file.h function
<        done > move some more functions to file.h (at least mkstemp/mkdtemp/mkdirp/opendir/readdir/closedir)
<        done > add [more] wrapper(s) for `stat` (see stat.txt)
<        done > merge 3 tr_getcwd implementations (libtransmission/libtransmission-test.c, utils/create.c, daemon/remote.c) into wrapper
<        done > add doxygen comments to all new/moved functions
<        done > ensure feature-testing #ifdefs work as before
<        done > ensure C and WinAPI file handles aren't being mixed; this basically means using wrappers everywhere
<        done > ensure type safety (tr_sys_file_t/int64_t/uint64_t vs. off_t/size_t/ssize_t/int/etc.)
<        done > make use of tr_error_t arguments, at least in some places for the start
<        done > investigate whether `set_file_for_single_pass` is needed for writing
<        done > use `tr_sys_file_realpath` instead of `tr_realpath` everywhere
<        done > review and optimize #includes
<        done > getHomeDir, tr_getDefaultConfigDir, tr_getWebClientDir (platform.c)
<        done > tr_getDiskFreeSpace (platform-quota.c)
<        done > make `tr_sys_path_resolve` return real path on Windows
<        done > `tr_getopt` on Windows (wmain + recode)
<        done > get rid of FILE*

Long-term:

<             > do something about code which assumes tr_error_t::code is errno (#ifndef WIN32? rewrite?)