py3: catch AttributeError too with ImportError

Looks like py3 raises AttributeError instead of ImportError. This is caught on
windows.

Differential Revision: https://phab.mercurial-scm.org/D7965

mercurial/color.py

@@ -44,7 +44,7 b' try:'
         b'cyan': (False, curses.COLOR_CYAN, b''),
         b'white': (False, curses.COLOR_WHITE, b''),
     }
-except ImportError:
+except (ImportError, AttributeError):
     curses = None
     _baseterminfoparams = {}
 

mercurial/crecord.py

@@ -63,13 +63,13 b' try:'
     import curses.ascii
 
     curses.error
-except ImportError:
+except (ImportError, AttributeError):
     # I have no idea if wcurses works with crecord...
     try:
         import wcurses as curses
 
         curses.error
-    except ImportError:
+    except (ImportError, AttributeError):
         # wcurses is not shipped on Windows by default, or python is not
         # compiled with curses
         curses = False

tests/hghave.py

@@ -685,7 +685,7 b' def has_tic():'
 
         curses.COLOR_BLUE
         return matchoutput('test -x "`which tic`"', br'')
-    except ImportError:
+    except (ImportError, AttributeError):
         return False