master updated (561ab9829dd -> fada04cfc78)

[Jim Porter]

jporter pushed a change to branch master.

      from  561ab9829dd New helper function project-read-project
       new  af029cdb3a6 Simplify creation of Eshell command forms
       new  40ffacb34b1 Improve correctness of Eshell sub-forms
       new  fada04cfc78 Add support for chaining conditionals in Eshell


Summary of changes:
 doc/misc/eshell.texi              |  56 ++++++++++++--------
 etc/NEWS                          |  14 +++++
 lisp/eshell/esh-arg.el            |   5 +-
 lisp/eshell/esh-cmd.el            | 104 ++++++++++++++++++++++++--------------
 lisp/eshell/esh-io.el             |   5 +-
 lisp/eshell/esh-var.el            |   4 +-
 test/lisp/eshell/esh-arg-tests.el |  13 +++++
 test/lisp/eshell/esh-cmd-tests.el |  48 ++++++++++++++++--
 test/lisp/eshell/esh-var-tests.el |   3 ++
 9 files changed, 185 insertions(+), 67 deletions(-)