Changes from 1.7.3 to 1.7.4:
---------------------------
* Bug fixes:
- Fix null-dereference crash when pulling a malformed 'uninstalled'
.pc file into a dependency tree. Patch by Tobias Stöckmann.
- Fix truncation of comment characters when quoted.
- Fix handling of .pc module names in --list-all on Windows.
Patch by Ryan Scott.
- Handle platforms where realpath(3) requires a pre-allocated buffer.
Patch by Fabian Groffen.
- Fix version whitespace warning.
Patch by Christoph Reiter.
* Enhancements:
- Rewrite DOS paths on native Windows builds that don't use
Cygwin/MSYS.
- Add WantDefaultPure cross-compiler personality option.
- Prefer --static --pure linking on Windows.
- Add PKG_CONFIG_DONT_DEFINE_PREFIX environment variable.
Patch by Jeff Moguillansky.
- Many improvements when building pkgconf with Meson.
Patches by Christoph Reiter.
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