catch AttributeError in util.checklink
There's no symlink function in the os module on windows.
Fixes issue468
#!/bin/shhg initecho a > ahg ci -d '0 0' -Amahg an aecho "[ui]" >> $HGRCPATHecho "strict=True" >> $HGRCPATHhg an ahg annotate aecho % should succeed - up is an alias, not an abbreviationhg up