bpo-30296 Remove unnecessary tuples, lists, sets, and dicts (#1489)

* Replaced list(<generator expression>) with list comprehension
* Replaced dict(<generator expression>) with dict comprehension
* Replaced set(<list literal>) with set literal
* Replaced builtin func(<list comprehension>) with func(<generator
  expression>) when supported (e.g. any(), all(), tuple(), min(), &
  max())

msvc9compiler.py

@@ -255,7 +255,7 @@ def query_vcvarsall(version, arch="x86"):
     """Launch vcvarsall.bat and read the settings from its environment
     """
     vcvarsall = find_vcvarsall(version)
-    interesting = set(("include", "lib", "libpath", "path"))
+    interesting = {"include", "lib", "libpath", "path"}
     result = {}
 
     if vcvarsall is None: