tests: use TESTTMP instead of TESTDIR

In 57d0c8c3b947, f042d4b263f4, 1e686e55780c, and 5d22cadd1938, new tests were
added that used TESTDIR instead of TESTTMP thereby leading to polluting the
working directory with these temporary files. Now, we use TESTTMP so that they
will be cleaned up properly.

tests/test-commit.t

@@ -298,7 +298,7 b' test saving last-message.txt'
   $ echo 'sub = sub' > .hgsub
   $ hg add .hgsub
 
-  $ cat > $TESTDIR/editor.sh <<EOF
+  $ cat > $TESTTMP/editor.sh <<EOF
   > echo "==== before editing:"
   > cat \$1
   > echo "===="
@@ -306,7 +306,7 b' test saving last-message.txt'
   > EOF
 
   $ rm -f .hg/last-message.txt
-  $ HGEDITOR="sh $TESTDIR/editor.sh" hg commit -S -q
+  $ HGEDITOR="sh $TESTTMP/editor.sh" hg commit -S -q
   ==== before editing:
   
   

tests/test-histedit-fold.t

@@ -107,7 +107,7 b' check histedit_source'
 
 check saving last-message.txt
 
-  $ cat > $TESTDIR/abortfolding.py <<EOF
+  $ cat > $TESTTMP/abortfolding.py <<EOF
   > from mercurial import util
   > def abortfolding(ui, repo, hooktype, **kwargs):
   >     ctx = repo[kwargs.get('node')]
@@ -117,10 +117,10 b' check saving last-message.txt'
   > EOF
   $ cat > .hg/hgrc <<EOF
   > [hooks]
-  > pretxncommit.abortfolding = python:$TESTDIR/abortfolding.py:abortfolding
+  > pretxncommit.abortfolding = python:$TESTTMP/abortfolding.py:abortfolding
   > EOF
 
-  $ cat > $TESTDIR/editor.sh << EOF
+  $ cat > $TESTTMP/editor.sh << EOF
   > echo "==== before editing"
   > cat \$1
   > echo "===="
@@ -128,7 +128,7 b' check saving last-message.txt'
   > EOF
 
   $ rm -f .hg/last-message.txt
-  $ HGEDITOR="sh $TESTDIR/editor.sh" hg histedit 6de59d13424a --commands - 2>&1 <<EOF | fixbundle
+  $ HGEDITOR="sh $TESTTMP/editor.sh" hg histedit 6de59d13424a --commands - 2>&1 <<EOF | fixbundle
   > pick 6de59d13424a f
   > fold 9c277da72c9b d
   > EOF

tests/test-mq-qfold.t

@@ -144,7 +144,7 b' Test saving last-message.txt:'
 
   $ hg qrefresh -m "original message"
 
-  $ cat > $TESTDIR/commitfailure.py <<EOF
+  $ cat > $TESTTMP/commitfailure.py <<EOF
   > from mercurial import util
   > def reposetup(ui, repo):
   >     class commitfailure(repo.__class__):
@@ -155,10 +155,10 b' Test saving last-message.txt:'
 
   $ cat > .hg/hgrc <<EOF
   > [extensions]
-  > commitfailure = $TESTDIR/commitfailure.py
+  > commitfailure = $TESTTMP/commitfailure.py
   > EOF
 
-  $ cat > $TESTDIR/editor.sh << EOF
+  $ cat > $TESTTMP/editor.sh << EOF
   > echo "==== before editing"
   > cat \$1
   > echo "===="
@@ -166,7 +166,7 b' Test saving last-message.txt:'
   > EOF
 
   $ rm -f .hg/last-message.txt
-  $ HGEDITOR="sh $TESTDIR/editor.sh" hg qfold -e p3
+  $ HGEDITOR="sh $TESTTMP/editor.sh" hg qfold -e p3
   ==== before editing
   original message====
   refresh interrupted while patch was popped! (revert --all, qpush to recover)

tests/test-mq-qnew.t

@@ -239,7 +239,7 b' Test saving last-message.txt'
   $ hg init repo
   $ cd repo
 
-  $ cat > $TESTDIR/commitfailure.py <<EOF
+  $ cat > $TESTTMP/commitfailure.py <<EOF
   > from mercurial import util
   > def reposetup(ui, repo):
   >     class commitfailure(repo.__class__):
@@ -249,10 +249,10 b' Test saving last-message.txt'
   > EOF
   $ cat > .hg/hgrc <<EOF
   > [extensions]
-  > commitfailure = $TESTDIR/commitfailure.py
+  > commitfailure = $TESTTMP/commitfailure.py
   > EOF
 
-  $ cat > $TESTDIR/editor.sh << EOF
+  $ cat > $TESTTMP/editor.sh << EOF
   > echo "==== before editing"
   > cat \$1
   > echo "===="
@@ -260,7 +260,7 b' Test saving last-message.txt'
   > EOF
 
   $ rm -f .hg/last-message.txt
-  $ HGEDITOR="sh $TESTDIR/editor.sh" hg qnew -e patch
+  $ HGEDITOR="sh $TESTTMP/editor.sh" hg qnew -e patch
   ==== before editing
   ====
   abort: emulating unexpected abort