Solaris 11 info test suite problems

[Gavin Smith]

I tried building the latest version on Solaris 11 on the OpenCSW build
farm and got a single test failure (in index-apropos.sh). However in
trying to fix it I found another problem, which is more serious -
echoing in the terminal was disabled after I ran an interactive test
(for example, info/t/tab.sh).

I narrowed it down to the following shell script

#!/bin/sh

read -t 1 FINISHED
echo obably >&2

Session transcript below:
-------------
unstable11x $stty
speed 38400 baud; -parity
rows = 56; columns = 80; ypixels = 732; xpixels = 484;
eof = ^a; swtch = <undef>; dsusp = <undef>; flush = <undef>;
brkint -inpck -istrip icrnl -ixany imaxbel onlcr
echo echoe echok echoctl echoke iexten
unstable11x $./test.sh
obably
unstable11x $speed 38400 baud; -parity
rows = 56; columns = 80; ypixels = 732; xpixels = 484;
min = 1; time = 0;
eof = ^a; swtch = <undef>; dsusp = <undef>; rprnt = <undef>; flush =
<undef>; werase = <undef>; lnext = <undef>;
brkint -inpck -istrip -ixany imaxbel onlcr
-isig -icanon -echo echoe -echok echoctl echoke iexten

------------

As you can (can't) see, the second time I typed "stty" was invisible.
The output for the second time is "-echo".

unstable11x $uname -a
SunOS unstable11x 5.11 11.0 i86pc i386 i86pc
unstable11x $/bin/sh --version
  version         sh (AT&T Research) 93u 2011-02-08
unstable11x $

This is weird indeed. Without the echo line, it works fine.