Update pypa to fix a mssing new line problem and set corrent distutils install directory

+ fix a test failing because of a slightly different error message than cpython 2.7.8

from_cpython/Lib/distutils/command/install.py

@@ -41,8 +41,11 @@ else:
 
 INSTALL_SCHEMES = {
     'unix_prefix': {
-        'purelib': '$base/lib/python$py_version_short/site-packages',
-        'platlib': '$platbase/lib/python$py_version_short/site-packages',
+        # Pyston change
+        # 'purelib': '$base/lib/python$py_version_short/site-packages',
+        # 'platlib': '$platbase/lib/python$py_version_short/site-packages',
+        'purelib': '$base/site-packages',
+        'platlib': '$base/site-packages',
         'headers': '$base/include/python$py_version_short/$dist_name',
         'scripts': '$base/bin',
         'data'   : '$base',

libpypa @ 98d769dc

-Subproject commit 0a2bbff17a4f8e0270c64423004b5613457e59db
+Subproject commit 98d769dcd3a792f70b5e9c9bb9afa7544a50ae4a

src/analysis/scoping_analysis.cpp

@@ -622,7 +622,10 @@ static void raiseNameForcingSyntaxError(const char* msg, ScopingAnalysis::ScopeN
         syntaxElemMsg = "import * is not allowed in function '%s' because it %s";
         lineno = usage->nameForcingNodeImportStar->lineno;
     } else {
-        syntaxElemMsg = "unqualified exec is not allowed in function '%.100s' it %s";
+        if (PYTHON_VERSION_MAJOR == 2 && PYTHON_VERSION_MINOR == 7 && PYTHON_VERSION_MICRO < 8)
+            syntaxElemMsg = "unqualified exec is not allowed in function '%.100s' it %s";
+        else
+            syntaxElemMsg = "unqualified exec is not allowed in function '%.100s' because it %s";
         lineno = usage->nameForcingNodeBareExec->lineno;
     }