Merge branch 'mplegendre-multi_pkgsrc_roots' into develop

- This moves var/spack/packages to var/spack/repos/builtin/packages.

- Packages that did not exist in the source branch, or were changed in
  develop, were moved into var/spack/repos/builtin/packages as part of
  the integration.

Conflicts:
	lib/spack/spack/test/unit_install.py
	var/spack/repos/builtin/packages/clang/package.py

lib/spack/llnl/util/lang.py

@@ -26,6 +26,7 @@
 import re
 import sys
 import functools
+import collections
 import inspect
 
 # Ignore emacs backups when listing modules
@@ -167,16 +168,32 @@ def has_method(cls, name):
     return False
 
 
-def memoized(obj):
+class memoized(object):
     """Decorator that caches the results of a function, storing them
        in an attribute of that function."""
-    cache = obj.cache = {}
-    @functools.wraps(obj)
-    def memoizer(*args, **kwargs):
-        if args not in cache:
-            cache[args] = obj(*args, **kwargs)
-        return cache[args]
-    return memoizer
+    def __init__(self, func):
+        self.func = func
+        self.cache = {}
+
+
+    def __call__(self, *args):
+        if not isinstance(args, collections.Hashable):
+            # Not hashable, so just call the function.
+            return self.func(*args)
+
+        if args not in self.cache:
+            self.cache[args] = self.func(*args)
+        return self.cache[args]
+
+
+    def __get__(self, obj, objtype):
+        """Support instance methods."""
+        return functools.partial(self.__call__, obj)
+
+
+    def clear(self):
+        """Expunge cache so that self.func will be called again."""
+        self.cache.clear()
 
 
 def list_modules(directory, **kwargs):

lib/spack/llnl/util/tty/__init__.py

@@ -63,35 +63,46 @@ def msg(message, *args):
 def info(message, *args, **kwargs):
     format = kwargs.get('format', '*b')
     stream = kwargs.get('stream', sys.stdout)
+    wrap   = kwargs.get('wrap', False)
 
     cprint("@%s{==>} %s" % (format, cescape(str(message))), stream=stream)
     for arg in args:
-        lines = textwrap.wrap(
-            str(arg), initial_indent=indent, subsequent_indent=indent)
-        for line in lines:
-            stream.write(line + '\n')
+        if wrap:
+            lines = textwrap.wrap(
+                str(arg), initial_indent=indent, subsequent_indent=indent)
+            for line in lines:
+                stream.write(line + '\n')
+        else:
+            stream.write(indent + str(arg) + '\n')
 
 
-def verbose(message, *args):
+def verbose(message, *args, **kwargs):
     if _verbose:
-        info(message, *args, format='c')
+        kwargs.setdefault('format', 'c')
+        info(message, *args, **kwargs)
 
 
-def debug(message, *args):
+def debug(message, *args, **kwargs):
     if _debug:
-        info(message, *args, format='g', stream=sys.stderr)
+        kwargs.setdefault('format', 'g')
+        kwargs.setdefault('stream', sys.stderr)
+        info(message, *args, **kwargs)
 
 
-def error(message, *args):
-    info("Error: " + str(message), *args, format='*r', stream=sys.stderr)
+def error(message, *args, **kwargs):
+    kwargs.setdefault('format', '*r')
+    kwargs.setdefault('stream', sys.stderr)
+    info("Error: " + str(message), *args, **kwargs)
 
 
-def warn(message, *args):
-    info("Warning: " + str(message), *args, format='*Y', stream=sys.stderr)
+def warn(message, *args, **kwargs):
+    kwargs.setdefault('format', '*Y')
+    kwargs.setdefault('stream', sys.stderr)
+    info("Warning: " + str(message), *args, **kwargs)
 
 
-def die(message, *args):
-    error(message, *args)
+def die(message, *args, **kwargs):
+    error(message, *args, **kwargs)
     sys.exit(1)
 
 

lib/spack/llnl/util/tty/colify.py

@@ -210,6 +210,13 @@ def colify(elts, **options):
 
 
 def colify_table(table, **options):
+    """Version of colify() for data expressed in rows, (list of lists).
+
+       Same as regular colify but takes a list of lists, where each
+       sub-list must be the same length, and each is interpreted as a
+       row in a table.  Regular colify displays a sequential list of
+       values in columns.
+    """
     if table is None:
         raise TypeError("Can't call colify_table on NoneType")
     elif not table or not table[0]: