Severity: wishlist

I think the "Author" header line in package.el does not accurately
reflect the contributions to that file.  In particular, I think Tom
Tromey should be listed as the sole author of package.el, in line with
our practices and to recognize his contribution.

Please see the attached patch and compare it the output of the following
command:

$ git shortlog -sn -- lisp/emacs-lisp/package.el | cat -n

     1	   132	Artur Malabarba
     2	    54	Glenn Morris
     3	    52	Stefan Monnier
     4	    46	Chong Yidong
     5	    40	Paul Eggert
     6	    23	Stefan Kangas
     7	    16	Dmitry Gutov
     8	    11	Lars Ingebrigtsen
     9	     8	Daiki Ueno
    10	     8	Juanma Barranquero
    11	     7	Eli Zaretskii
    12	     7	Sam Steingold
    13	     5	Noam Postavsky
    14	     5	Ted Zlatanov
    15	     4	John Wiegley
    16	     4	Pieter van Oostrum
    17	     3	Basil L. Contovounesios
    18	     3	Bastien Guerry
    19	     3	Nicolas Richard
    20	     3	Phil Hagelberg
    21	     3	Thien-Thi Nguyen
    22	     3	Thierry Volpiatto
    23	     3	Thomas Fitzsimmons
    24	     2	Chunyang Xu
    25	     2	Daniel Hackney

Any objections?