updated corresponding nuget packages for python 2.7.16

Author: chcg

PythonScript/project/PythonSettings_appveyor.props

@@ -4,8 +4,8 @@
   <PropertyGroup Label="UserMacros">
     <BoostBase></BoostBase>
     <BoostPythonLibPath></BoostPythonLibPath>
-    <PythonBase>$(SolutionDir)/packages/python2x86.2.7.15/tools</PythonBase>
-    <PythonBaseX64>$(SolutionDir)/packages/python2.2.7.15/tools</PythonBaseX64>
+    <PythonBase>$(SolutionDir)/packages/python2x86.2.7.16/tools</PythonBase>
+    <PythonBaseX64>$(SolutionDir)/packages/python2.2.7.16/tools</PythonBaseX64>
     <PythonLibPath>$(PythonBase)\libs</PythonLibPath>
     <PythonLibPathX64>$(PythonBaseX64)\libs</PythonLibPathX64>
     <HtmlHelpBase>C:\Program Files (x86)\HTML Help Workshop</HtmlHelpBase>

PythonScript/project/packages_appveyor.config

@@ -3,6 +3,6 @@
   <package id="boost" version="1.66.0.0" targetFramework="native" />
   <package id="boost_python-vc140" version="1.66.0.0" targetFramework="native" />
   <package id="boost_regex-vc140" version="1.66.0.0" targetFramework="native" />
-  <package id="python2" version="2.7.15" targetFramework="native" />
-  <package id="python2x86" version="2.7.15" targetFramework="native" />
+  <package id="python2" version="2.7.16" targetFramework="native" />
+  <package id="python2x86" version="2.7.16" targetFramework="native" />
 </packages>