bug#35919: recutils package does not install emacs rec-mode

[Jack Hill]

Hello Guix,

Emacs is listed as a native imput of the recutils package, but the emacs 
rec-mode is not install (it is found in the etc directory of the source).

Best,
Jack

address@hidden ~$ guix describe
Generation 33   May 23 2019 21:23:03    (current)
  guix e26d628
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: e26d628b0fabf5a0aa7c4164a9558c66c61e02ab
address@hidden ~$ cd $(guix build recutils)
address@hidden /gnu/store/163pczynvjfq4l6p7nam5sx9wbz07bgz-recutils-1.8$ find .
.
./lib
./lib/librec.so.1.0.0
./lib/testrec.so.0
./lib/readrec.so.0
./lib/readrec.so.0.0.0
./lib/testrec.la
./lib/readrec.la
./lib/readrec.so
./lib/librec.so.1
./lib/testrec.so
./lib/librec.la
./lib/testrec.a
./lib/readrec.a
./lib/librec.so
./lib/testrec.so.0.0.0
./lib/librec.a
./share
./share/doc
./share/doc/recutils-1.8
./share/doc/recutils-1.8/COPYING
./share/locale
./share/locale/vi
./share/locale/vi/LC_MESSAGES
./share/locale/vi/LC_MESSAGES/recutils.mo
./share/locale/sr
./share/locale/sr/LC_MESSAGES
./share/locale/sr/LC_MESSAGES/recutils.mo
./share/locale/fi
./share/locale/fi/LC_MESSAGES
./share/locale/fi/LC_MESSAGES/recutils.mo
./share/locale/pt_BR
./share/locale/pt_BR/LC_MESSAGES
./share/locale/pt_BR/LC_MESSAGES/recutils.mo
./share/locale/de
./share/locale/de/LC_MESSAGES
./share/locale/de/LC_MESSAGES/recutils.mo
./share/locale/uk
./share/locale/uk/LC_MESSAGES
./share/locale/uk/LC_MESSAGES/recutils.mo
./share/locale/fr
./share/locale/fr/LC_MESSAGES
./share/locale/fr/LC_MESSAGES/recutils.mo
./share/locale/es
./share/locale/es/LC_MESSAGES
./share/locale/es/LC_MESSAGES/recutils.mo
./share/locale/sv
./share/locale/sv/LC_MESSAGES
./share/locale/sv/LC_MESSAGES/recutils.mo
./share/locale/nl
./share/locale/nl/LC_MESSAGES
./share/locale/nl/LC_MESSAGES/recutils.mo
./share/man
./share/man/man1
./share/man/man1/recdel.1.gz
./share/man/man1/rec2csv.1.gz
./share/man/man1/recfmt.1.gz
./share/man/man1/recinf.1.gz
./share/man/man1/recfix.1.gz
./share/man/man1/recins.1.gz
./share/man/man1/recsel.1.gz
./share/man/man1/recset.1.gz
./share/man/man1/csv2rec.1.gz
./share/info
./share/info/recutils.info.gz
./share/info/rec-mode.info.gz
./share/recutils
./share/recutils/etc
./share/recutils/etc/FSD.rec
./include
./include/rec.h
./bin
./bin/recfmt
./bin/recins
./bin/recfix
./bin/recdel
./bin/rec2csv
./bin/recset
./bin/recinf
./bin/recsel
./bin/csv2rec