fix error when parsing alternatives file for a disabled architecture

Changes in this release:

• Fix typo for TERMUX_SCRIPTDIR environment variable.
  Commit Id: 20b8690

• Fix error when parsing alternative file for disabled architecture for the package
  Commit Id: d871d8d

support for .alternatives file

Note that the v3.0 was never released but existed only on the master branch. But since the release was marked in the commit, a new version is being released instead of reusing the same version

v3.1 changelog

Changes in this release:

• use TERMUX_SCRIPTDIR instead of TERMUX_PKG_CACHEDIR
  Commit Id: df8d622

v3.0 changelog

For the full list of changes, kindly look at the commit history. This
only lists changes that are major.

Major Changes:

• use javascript Map instead of Object
  Commit Id: f79de15

• add support for '.alternatives' file (Debian Alternatives)
  Commit Id: 1f8268b

• Bump CMake version requirement >= 3.25
  Commit Id: 0d590a1

Minor Changes:

• only download Contents.gz file for the architecture we are building
  for
  Commit Id: 5faf3d0

Full Changelog: 2.4.0...3.1

2.4.0: use TERMUX_PKG_CACHEDIR instead of TERMUX_SCRIPTDIR

generate-db.js: use TERMUX_PKG_CACHEDIR instead of TERMUX_SCRIPTDIR to customize repo.json
generate_db.js: Refactor the code

2.3.0: ignore "pkg_format" in repo.json

generate-db.js: ignore pkg_format

2.2.0: use repository url from repo.json

This release catches up with termux/termux-packages@350443b.

There are also a bunch of minor changes. The full list of changes can be found at 2.1.0...2.2.0

v2.1.0

Changes wording in pkg install suggestion, fixed by @jidhub

2.0

What's Changed

• chore: generate command-not-found db instead of storing it as header files in git history by @thunder-coding in #14

Full Changelog: 1.75...2.0

2022-03-20

termux-packages      https://github.com/termux/termux-packages/tree/07a6725
termux-root-packages https://github.com/termux/termux-root-packages/tree/e862ec8
x11-packages         https://github.com/termux/x11-packages/tree/da32c84

2022-02-03

termux-packages      https://github.com/termux/termux-packages/tree/5ea47ac
termux-root-packages https://github.com/termux/termux-root-packages/tree/3f66270
x11-packages         https://github.com/termux/x11-packages/tree/39a910c

2022-01-20

termux-packages      https://github.com/termux/termux-packages/tree/ee0de34
x11-packages         https://github.com/termux/x11-packages/tree/f7c869e