osutil.c: include Python.h before the other headers
This is recommended by the Python documentation, since Python.h defines
some constants.
#!/bin/sh
"$TESTDIR/hghave" symlink || exit 80
cat > echo.py <<EOF
#!/usr/bin/env python
import os
for k in ('HG_MY_ISLINK', 'HG_OTHER_ISLINK', 'HG_BASE_ISLINK'):
print k, os.environ[k]
EOF
chmod +x echo.py
# Create 2 heads containing the same file, once as
# a file, once as a link.
echo % create heads
hg init t
cd t
echo a > a
hg ci -qAm t0
echo l > l
hg ci -qAm t1
hg up -C 0
ln -s a l
hg ci -qAm t2
# Merge them and display *_ISLINK vars
echo % merge heads
HGMERGE=../echo.py hg merge