tests: use 'wget' instead of 'curl' for Windows compatibility The whole test suite now runs without skips, and the only two failures are a bookmark cache issue in test-prune.t, and a local output vs remote output reordering when pushing to ssh. The latter anyway is a core problem.

setup: allow including inhibit in the build Adds the INCLUDE_INHIBIT environment variable to allow including the inhibit extension in the build.