remove unused file
use the force luke
Merge #656 r=@johnnyman727: Removes unused buffer file

Found this larking about.

NOTE: this is actually the only (current!) user of tm_endian_t, but it has been left since e.g. https://github.com/tessel/runtime/pull/645 and/or https://github.com/tessel/runtime/pull/566 will want it
Merge #657 r=@kevinmehall: Use built in memory helpers

You're killing me here Tim ;-)
complete date implementation

This fixes #669

Implemented the rest of the `Date` prototype.

- Methods to set time (`setSeconds`, `setHours `, etc)
- Methods to set date (`setFullYear`, `setMonth`, etc)
- Longer constructor (`new Date(year, month[, ...])`)
- More formats (`toLocaleString`, `toTimeString`, etc)
- UTC setters (`setUTCHours`, `setUTCMinutes`, etc)
- Timezone support (`getTimezoneOffset`)
- UTC constructor (`Date.UTC(year, month[, ...])`)
- Tested in multiple timezones

When running the tests, be sure to try with some different timezones (`TZ=Europe/Stockholm make test`).

- America/Los_Angelesi (UTC-08:00)
- America/St_Johns (UTC-03:30)
- Asia/Kabul (UTC+04:30)
- Europe/Stockholm (UTC+01:00)
- Hongkong (UTC+08:00)