tests: add .sh and .pl suffixes to shell and perl tests, respectively

Not only this shrinks the size of the generated Makefile (from > 6300
lines to ~3000), but will allow further simplifications in future
changes.

* tests/Makefile.am (TEST_EXTENSIONS): Add '.sh' and '.pl'.
(PL_LOG_COMPILER, SH_LOG_COMPILER): New, still defined simply to
$(LOG_COMPILER) for the time being.
(TESTS, root_tests): Adjust as described.
* All tests: Rename as described.

tests/split/fail.sh

@@ -0,0 +1,81 @@
+#!/bin/sh
+# split must fail when given length/count of zero.
+
+# Copyright (C) 2003-2012 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+print_ver_ split
+getlimits_
+
+touch in || framework_failure_
+
+
+split -a 0 in 2> /dev/null || fail=1
+split -b 0 in 2> /dev/null && fail=1
+split -C 0 in 2> /dev/null && fail=1
+split -l 0 in 2> /dev/null && fail=1
+split -n 0 in 2> /dev/null && fail=1
+split -n 1/0 in 2> /dev/null && fail=1
+split -n 0/1 in 2> /dev/null && fail=1
+split -n 2/1 in 2> /dev/null && fail=1
+
+# Make sure -C doesn't create empty files.
+rm -f x?? || fail=1
+echo x | split -C 1 || fail=1
+test -f xaa && test -f xab || fail=1
+test -f xac && fail=1
+
+# Make sure that the obsolete -N notation still works
+split -1 in 2> /dev/null || fail=1
+
+# Then make sure that -0 evokes a failure.
+split -0 in 2> /dev/null && fail=1
+
+split --lines=$UINTMAX_MAX in || fail=1
+split --bytes=$OFF_T_MAX in || fail=1
+split --line-bytes=$OFF_T_OFLOW 2> /dev/null in && fail=1
+split --line-bytes=$SIZE_OFLOW 2> /dev/null in && fail=1
+if truncate -s$SIZE_OFLOW large; then
+  # Ensure we can split chunks of a large file on 32 bit hosts
+  split --number=$SIZE_OFLOW/$SIZE_OFLOW large >/dev/null || fail=1
+fi
+split --number=r/$UINTMAX_MAX/$UINTMAX_MAX </dev/null >/dev/null || fail=1
+split --number=r/$UINTMAX_OFLOW </dev/null 2>/dev/null && fail=1
+
+# Make sure that a huge obsolete option evokes the right failure.
+split -99999999999999999991 2> out && fail=1
+
+# On losing systems (x86 Solaris 5.9 c89), we get a message like this:
+#   split: line count option -9999999999... is too large
+# while on most, we get this:
+#   split: line count option -99999999999999999991... is too large
+# so map them both to -99*.
+sed 's/99[19]*/99*/' out > out-t
+mv -f out-t out
+
+cat <<\EOF > exp
+split: line count option -99*... is too large
+EOF
+compare exp out || fail=1
+
+# Make sure split fails when it can't read input
+# (the current directory in this case)
+if ! cat . >/dev/null; then
+  # can't read() directories
+  split . && fail=1
+fi
+
+Exit $fail