Rollup merge of #74589 - ehuss:update-books, r=ehuss

Update books

## reference

5 commits in 0ea7bc494f1289234d8800bb9185021e0ad946f0..b329ce37424874ad4db94f829a55807c6e21d2cb
2020-07-02 15:33:04 -0700 to 2020-07-20 08:54:08 -0700
- this '*' is unnecessary, and reduces readability (rust-lang/reference#853)
- Tiny typo fix (rust-lang/reference#849)
- Update const eval chapter to latest changes (rust-lang/reference#842)
- Document #[track_caller]. (rust-lang/reference#742)
- Document shebang restriction. (rust-lang/reference#823)

## book

2 commits in 84a31397b34f9d405df44f2899ff17a4828dba18..a914f2c7e5cdb771fa465de142381a51c53b580e
2020-07-04 10:50:18 -0500 to 2020-07-21 09:20:05 -0500
- Change misleading wording (rust-lang/book#2399)
- Improve wording to include Windows versions (rust-lang/book#2395)

## edition-guide

3 commits in 82bec5877c77cfad530ca11095db4456d757f668..bd6e4a9f59c5c1545f572266af77f5c7a5bad6d1
2020-06-03 08:56:02 -0500 to 2020-07-12 17:37:08 -0500
- update guide for 1.36 and 1.37 (rust-lang/edition-guide#217)
- Add contents for Rust 1.35 (rust-lang/edition-guide#216)
- update edition guide for Rust 1.34 (rust-lang/edition-guide#215)

Author: Manishearth