Updated windows instructions

to include the 2010 redistributable.

<rant>Windows is several GiB large, but they felt like having to
save space when they had to include a 5MiB library that is used
by everything.</rant>

windows/README.txt

@@ -4,8 +4,7 @@ Requirements:
 3)Py2exe
 4)Innosetup
 
-It might be necessary to have the: Microsoft Visual C++ 2008 Redistributable Package, because python 2.6 uses it and it's not installed by default in windows. I don't know if python 3 still needs it.
-
+It is necessary to have the: Microsoft Visual C++ 2010 Redistributable Package.
 
 	Create an exe file
 - Move the file windows/input.py to ../
@@ -18,6 +17,7 @@ At the end, there should be a directory named "dist" containing the exe file and
 
 	Create the setup with Inno Setup
 - Move windows/ss.iss to ../
+- Download the Microsoft Visual C++ 2010 Redistributable, call it vcredist_x86.exe and save it in the relational main directory
 - Open ss.iss with Inno Setup, Build and Compile
 
 A directory named "Output" will be created, which will contain the installer.

windows/ss.iss

@@ -28,11 +28,17 @@ Name: "english"; MessagesFile: "compiler:Default.isl"
 Name: "desktopicon"; Description: "{cm:CreateDesktopIcon}"; GroupDescription: "{cm:AdditionalIcons}"; Flags: unchecked
 Name: "quicklaunchicon"; Description: "{cm:CreateQuickLaunchIcon}"; GroupDescription: "{cm:AdditionalIcons}"; Flags: unchecked
 
+[Run]
+; add the Parameters, WorkingDir and StatusMsg as you wish, just keep here
+; the conditional installation Check
+Filename: "{tmp}\vcredist_x86.exe"; Check: VCRedistNeedsInstall
+
 [Files]
 Source: "dist\relational_gui.exe"; DestDir: "{app}"; Flags: ignoreversion
 Source: "dist\*"; DestDir: "{app}"; Flags: ignoreversion recursesubdirs createallsubdirs
 Source: "windows\font dejavu\*"; DestDir: "{fonts}"; FontInstall: "Dejavu Sans"
 Source: "samples\*"; DestDir: "{app}"; Flags: ignoreversion recursesubdirs createallsubdirs
+Source: "vcredist_x86.exe"; DestDir: {tmp}; Flags: deleteafterinstall
 ; NOTE: Don't use "Flags: ignoreversion" on any shared system files
 
 [Icons]