patch 8.0.1300: file permissions may end up wrong when writing commit https://github.com/vim/vim/commit/cd142e3369db8888163a511dbe9907bcd138829c Author: Bram Moolenaar <Bram@vim.org> Date: Thu Nov 16 17:03:45 2017 +0100 patch 8.0.1300: file permissions may end up wrong when writing Problem: File permissions may end up wrong when writing. Solution: Use fchmod() instead of chmod() when possible. Don't truncate until we know we can change the file.

This is a MODIFIED version of libvterm.

The original can be found:
- on the original site (tar archive and Bazaar repository):
	http://www.leonerd.org.uk/code/libvterm/
- cloned on Github:
	https://github.com/neovim/libvterm

Modifications:
- Add a .gitignore file.
- Convert from C99 to C90.
- Other changes to support embedding in Vim.