test-conflicts: conditionalize for no-symlink platforms

It seems better to create standin files for the symlinks, rather than blacklist
the entire tests.  Especially since link vs file doesn't seem to affect the
tests.

There is more instability in test-pathconflicts-{basic,merge}.t that I can't
figure out.

tests/test-origbackup-conflict.t

@@ -75,13 +75,19 b' Cause a symlink to be backed up that poi'
 
   $ hg up -q 0
   $ mkdir ../sym-link-target
+#if symlink
   $ ln -s ../../../sym-link-target b
+#else
+  $ touch b
+#endif
   $ hg up b1
   b: replacing untracked file
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (activating bookmark b1)
+#if symlink
   $ readlink.py .hg/origbackups/b
   .hg/origbackups/b -> ../../../sym-link-target
+#endif
 
 Perform an update that causes b/c to be backed up again - it should not go into the target dir
 
@@ -111,7 +117,8 b' Incorrectly configure origbackuppath to '
   b/c: replacing untracked file
   getting b/c
   creating directory: $TESTTMP/repo/.hg/badorigbackups/b
-  abort: Not a directory: '$TESTTMP/repo/.hg/badorigbackups/b'
+  abort: The system cannot find the path specified: '$TESTTMP/repo/.hg/badorigbackups/b' (glob) (windows !)
+  abort: Not a directory: '$TESTTMP/repo/.hg/badorigbackups/b' (no-windows !)
   [255]
   $ cat .hg/badorigbackups
   data

tests/test-pathconflicts-update.t

@@ -15,7 +15,11 b''
   $ hg up 0
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ mkdir a
+#if symlink
   $ ln -s c a/b
+#else
+  $ touch a/b
+#endif
   $ hg add a/b
   $ hg commit -m "link"
   created new head
@@ -50,7 +54,11 b' Update - local symlink conflicts with re'
 
   $ hg up -q 0
   $ mkdir a
+#if symlink
   $ ln -s x a/b
+#else
+  $ touch a/b
+#endif
   $ hg up dir
   a/b: untracked file conflicts with directory
   abort: untracked files in working directory differ from files in requested revision
@@ -59,8 +67,10 b' Update - local symlink conflicts with re'
   a/b: replacing untracked file
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (activating bookmark dir)
+#if symlink
   $ readlink.py a/b.orig
   a/b.orig -> x
+#endif
   $ rm a/b.orig
 
 Update - local directory conflicts with remote file
@@ -94,8 +104,10 b' Update - local directory conflicts with '
   a/b: replacing untracked files in directory
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (activating bookmark link)
+#if symlink
   $ readlink.py a/b
   a/b -> c
+#endif
   $ test -d a/b.orig
   $ rm -rf a/b.orig