Segfault in LIBEDIT_INTERNAL after tgetstr(), when libncurses5-dev
isn't installed

Include the appropriate declarations when not using termcap, but term+curses
and [n]curses do not exist.

(closes issue ASTERISK-22351)
Reported by: A. Iglesias
Patches:
    issueA22351_libedit_internal_without_ncurses_dev.patch uploaded by wdoekes (license 5674)


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/1.8@401325 f38db490-d61c-443f-a65b-d21fe96a405b