Cleanup and format

src/header/dlfcn/mod.rs

src/header/mod.rs

src/header/netdb/db.rs

src/header/netdb/lookup.rs

src/header/netdb/mod.rs

src/header/netinet_in/mod.rs

src/header/pwd/mod.rs

src/header/regex/mod.rs

src/header/signal/mod.rs

src/header/stdio/mod.rs

src/header/stdlib/sort.rs

src/header/sys_statvfs/mod.rs

src/header/sys_timeb/mod.rs

src/header/sys_uio/mod.rs

src/header/unistd/mod.rs

src/header/unistd/sysconf.rs

src/header/wchar/mod.rs

src/lib.rs

src/macros.rs

src/platform/linux/mod.rs