make clean: Delete darcs-repo

Dependencies

• [2] A43SLRSH Fix handling of IPC::Run::run exit status
• [3] OSZDLGMP add target to make simple git/hg/svn inputs
• [4] G2ZB6464 first test, not yet in buildprocess
• [5] WFJ3ZPRM add tests for scm inputs
• [6] OB7GB5DL Test environment cleanups
• [7] DCHQR576 add bzr-repo target
• [8] HX4QYOYA add first evaluations tests

Change contents

• replacement in tests/Makefile.am at line 30
  [3.51]→[3.46:157](∅→∅),[3.455]→[3.46:157](∅→∅)
  − rm -rf db.sqlite data nix git-repo hg-repo svn-repo svn-checkout svn-checkout-repo bzr-repo bzr-checkout-repo
  [3.51]

  [2.3558]
  + rm -rf db.sqlite data nix git-repo hg-repo svn-repo svn-checkout svn-checkout-repo bzr-repo bzr-checkout-repo darcs-repo