Do not create an archive if the prefix is absolute

Dependencies

• [2] MDH4VR4R Archive: / after prefixes and long names
• [*] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).
• [*] L4JXJHWX pijul/*: reorganize imports and remove extern crate

Change contents

• edit in pijul/src/commands/archive.rs at line 4
  [5.3153]

  [5.3153]
  + use anyhow::bail;
• edit in pijul/src/commands/archive.rs at line 51
  [2.57]

  [2.57]
  + if std::path::Path::new(p).is_absolute() {

  + bail!("Prefix path cannot be absolute")

  + }