remove bashisms from tests

tests/test-clone-r

@@ -1,59 +1,59 b''
-#!/bin/bash
+#!/bin/sh
 
 hg init test
 cd test
 cat >>afile <<EOF
 0
 EOF
 hg add afile
 hg commit -m "0.0"
 cat >>afile <<EOF
 1
 EOF
 hg commit -m "0.1"
 cat >>afile <<EOF
 2
 EOF
 hg commit -m "0.2"
 cat >>afile <<EOF
 3
 EOF
 hg commit -m "0.3"
 hg update -C 0
 cat >>afile <<EOF
 1
 EOF
 hg commit -m "1.1"
 cat >>afile <<EOF
 2
 EOF
 hg commit -m "1.2"
 cat >fred <<EOF
 a line
 EOF
 cat >>afile <<EOF
 3
 EOF
 hg add fred
 hg commit -m "1.3"
 hg mv afile adifferentfile
 hg commit -m "1.3m"
 hg update -C 3
 hg mv afile anotherfile
 hg commit -m "0.3m"
 hg debugindex .hg/data/afile.i
 hg debugindex .hg/data/adifferentfile.i
 hg debugindex .hg/data/anotherfile.i
 hg debugindex .hg/data/fred.i
 hg debugindex .hg/00manifest.i
 hg verify
 cd ..
 for i in 0 1 2 3 4 5 6 7 8; do
    hg clone -r "$i" test test-"$i"
    cd test-"$i"
    hg verify
    cd ..
 done
 cd test-8
 hg pull ../test-7
 hg verify

tests/test-push-r

@@ -1,61 +1,61 b''
-#!/bin/bash
+#!/bin/sh
 
 hg init test
 cd test
 cat >>afile <<EOF
 0
 EOF
 hg add afile
 hg commit -m "0.0"
 cat >>afile <<EOF
 1
 EOF
 hg commit -m "0.1"
 cat >>afile <<EOF
 2
 EOF
 hg commit -m "0.2"
 cat >>afile <<EOF
 3
 EOF
 hg commit -m "0.3"
 hg update -C 0
 cat >>afile <<EOF
 1
 EOF
 hg commit -m "1.1"
 cat >>afile <<EOF
 2
 EOF
 hg commit -m "1.2"
 cat >fred <<EOF
 a line
 EOF
 cat >>afile <<EOF
 3
 EOF
 hg add fred
 hg commit -m "1.3"
 hg mv afile adifferentfile
 hg commit -m "1.3m"
 hg update -C 3
 hg mv afile anotherfile
 hg commit -m "0.3m"
 hg debugindex .hg/data/afile.i
 hg debugindex .hg/data/adifferentfile.i
 hg debugindex .hg/data/anotherfile.i
 hg debugindex .hg/data/fred.i
 hg debugindex .hg/00manifest.i
 hg verify
 cd ..
 for i in 0 1 2 3 4 5 6 7 8; do
    mkdir test-"$i"
    hg --cwd test-"$i" init
    hg -R test push -r "$i" test-"$i"
    cd test-"$i"
    hg verify
    cd ..
 done
 cd test-8
 hg pull ../test-7
 hg verify