sh testsuite: create hush-redir/* and move files around

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

shell/hush_test/hush-redir/redir7.right

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+Ok
+Ok
+Done

shell/hush_test/hush-redir/redir7.tests

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+# Chars above 0x7f are used as special codes.
+# 0x81 is CTLESC (see ash.c).
+# The bug was that quoting and unquoting of them
+# was out of sync for redirect filenames.
+
+>unicode.sh
+printf 'echo Ok >uni\x81code\n' >>unicode.sh
+printf 'cat uni\x81code\n' >>unicode.sh
+printf 'cat uni?code\n' >>unicode.sh
+. ./unicode.sh
+rm uni*code*
+echo Done

shell/hush_test/hush-redir/redir8.right

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+Ok
+Ok
+Done

shell/hush_test/hush-redir/redir8.tests

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+# Chars above 0x7f are used as special codes.
+# 0x81 is CTLESC (see ash.c).
+# The bug was that quoting and unquoting of them
+# was out of sync for redirect filenames.
+
+# Subcase when redirect filename is specified in a variable.
+
+>unicode.sh
+printf 'v=uni\x81code\n' >>unicode.sh
+printf 'echo Ok >"$v"\n' >>unicode.sh
+printf 'cat uni\x81code\n' >>unicode.sh
+printf 'cat uni?code\n' >>unicode.sh
+. ./unicode.sh
+rm uni*code*
+echo Done

shell/hush_test/hush-redir/redir9.right

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+Ok
+Done:0

shell/hush_test/hush-redir/redir9.tests

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+echo Ok >file.tmp
+cat 0<>file.tmp
+echo Done:$?
+rm file.tmp

shell/hush_test/hush-redir/redirA.right

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+tmp11
+tmp11

shell/hush_test/hush-redir/redirA.tests

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+x="tmp11:tmp22"
+
+# Bug was incorrectly expanding variables in >redir
+echo "${x%:*}" >"${x%:*}"
+echo tmp1*
+rm tmp1*
+
+# Also try unquoted
+echo "${x%:*}" >${x%:*}
+echo tmp1*
+rm tmp1*