continuation of #109595
pkgconfig was aliased in 2018, however, it remained in
all-packages.nix due to its wide usage. This cleans
up the remaining references to pkgs.pkgsconfig and
moves the entry to aliases.nix.
python3Packages.pkgconfig remained unchanged because
it's the canonical name of the upstream package
on pypi.
Semi-automatic update. These checks were performed:
- built on NixOS
- found 2.1.2 with grep in /nix/store/382shdj4qs6hl916ycw7ai4c7xz1sd40-msilbc-2.1.2
- found 2.1.2 in filename of file in /nix/store/382shdj4qs6hl916ycw7ai4c7xz1sd40-msilbc-2.1.2
`selectVersion ./foo "bar"' instead of `import ./foo/bar.nix'.
* Replaced `with args' with formal function arguments in several
packages.
* Renamed several files to `default.nix'. As a general rule, version
numbers should only be included in the filename when there is a
reason to keep multiple versions of a package in Nixpkgs.
Otherwise, it just makes it harder to update the package.
svn path=/nixpkgs/trunk/; revision=18403
