scratch/package-vc-fixes updated (f46e3b82bc -> eb38f3b217)

[Philip Kaludercic]

zge pushed a change to branch scratch/package-vc-fixes.

      from  f46e3b82bc Explain that 'package-vc-install' doesn't remove tarball 
packages
       new  aeadd1555c Have 'vc-prepare-patch' handle prefix arguments.
       new  8cb28e2d2f * lisp/vc/vc.el (vc-default-last-change): Use 'vc-call'
       new  e7e47b35b1 Improve robustness of 'package-vc-update'
       new  7fb02f2feb * lisp/emacs-lisp/package.el (package-lisp-dir): Fix 
return value
       new  eb38f3b217 Fix accidental generation of circular lists


Summary of changes:
 lisp/emacs-lisp/package-vc.el | 32 +++++++++++++-------------
 lisp/emacs-lisp/package.el    |  2 +-
 lisp/vc/vc.el                 | 52 ++++++++++++++++++++++++++++---------------
 3 files changed, 52 insertions(+), 34 deletions(-)