v1.4.14

• Used ftruncate() instead of posix_fallocate() due to EINVAL on ZFS (unix.c)
• Enable XOPEN_SOURCE only for Linux
• Fixed incorrect selection of strerror_r for musl builds.
• Set appropriate _XOPEN_SOURCE=700 level for nftw (unix.c)
• iwxstr_printf() now conforms to stdlib printf function (iwxstr.h)
• Moved some useful defs from iwutil.h into basedefs.h
• Fixed iwre_match() function signatute allowing const char* input (iwre.h)
• Added lightweight regexp implementation (iwre.h)
• Added size_t iwxstr_asize(IWXSTR*) (iwxstr.h)
• Added locale independed strtod: iwstrtod() (iwconv.h)