This is a squash commit of the joint work from:
* Jan Tojnar (@jtojnar)
* Linus Heckemann (@lheckemann)
* Ryan Mulligan (@ryantm)
* romildo (@romildo)
* Tom Hunger (@teh)
- Don't build with libsigsegv by default. The build apparently attempted
to link against it, but it never retained the reference anyway...
- Side effect: stdenv bootstrapping needs no libsigsegv anymore.
- Run checks, but only in the interactive gawk by default on Linux,
so that stdenv bootstrap isn't slowed down (by glibc locales, etc.).
- xz should be no longer needed in inputs, as we have it in stdenvs now.
The whole change was triggered by some used kernel versions still
breaking libsigsegv tests #28464.
* pgadmin: use https homepage
* msn-pecan: move homepage to github
google code is now unavailable
* pidgin-latex: use https for homepage
* pidgin-opensteamworks: use github for homepage
google code is unavailable
* putty: use https for homepage
* ponylang: use https for homepage
* picolisp: use https for homepage
* phonon: use https for homepage
* pugixml: use https for homepage
* pioneer: use https for homepage
* packer: use https for homepage
* pokerth: usee https for homepage
* procps-ng: use https for homepage
* pycaml: use https for homepage
* proot: move homepage to .github.io
* pius: use https for homepage
* pdfread: use https for homepage
* postgresql: use https for homepage
* ponysay: move homepage to new site
* prometheus: use https for homepage
* powerdns: use https for homepage
* pm-utils: use https for homepage
* patchelf: move homepage to https
* tesseract: move homepage to github
* quodlibet: move homepage from google code
* jbrout: move homepage from google code
* eiskaltdcpp: move homepage to github
* nodejs: use https to homepage
* nix: use https for homepage
* pdf2djvu: move homepage from google code
* game-music-emu: move homepage from google code
* vacuum: move homepae from google code
Run-time deps aren't necessarily on the PATH, so we cannot rely on
configure finding it.
N.B. on cross `-z` support is assumed missing, which is an incorrect
assumption.
