Add InnoSetup script to make a basic installer.

Adds a redist submodule where the installer can get the VC redists.

.gitmodules

@@ -13,3 +13,6 @@
 [submodule "dx9sdk"]
 	path = dx9sdk
 	url = https://github.com/hrydgard/minidx9.git
+[submodule "redist"]
+	path = redist
+	url = https://github.com/hrydgard/ppsspp-redist.git

notinstalled.txt

@@ -0,0 +1,2 @@
+This gets renamed to "installed.txt" in the installer.
+Tells PPSSPP to consider itself installed and to not write data files into its own directory.

ppsspp.iss

@@ -0,0 +1,41 @@
+[Setup]
+AppName={cm:AppName}
+AppVersion=0.9.5
+DefaultDirName={pf}\PPSSPP
+; Since no icons will be created in "{group}", we don't need the wizard
+; to ask for a Start Menu folder name:
+DisableProgramGroupPage=yes
+UninstallDisplayIcon={app}\PPSSPPWindows.exe
+OutputDir=.
+UsePreviousLanguage=no
+
+[CustomMessages]
+AppName=PPSSPP
+LaunchProgram=Start PPSSPP after finishing installation
+
+[Files]
+Source: "PPSSPPWindows.exe"; DestDir: "{app}"
+Source: "README.md"; DestName: "README.txt"; DestDir: "{app}"; Flags: isreadme
+Source: "notinstalled.txt"; DestName: "installed.txt"; DestDir: "{app}";
+Source: "assets\ppge_atlas.zim"; DestDir: "{app}\assets"
+Source: "assets\ui_atlas.zim"; DestDir: "{app}\assets"
+Source: "lang\*.ini"; DestDir: "{app}\lang"
+Source: "flash0\font\*.*"; DestDir: "{app}\flash0\font"
+Source: "redist/vcredist_x86.exe"; DestDir: {tmp}
+
+[Run]
+Filename: {tmp}\vcredist_x86.exe; Parameters: "/passive /Q:a /c:""msiexec /qb /i vcredist.msi"" "; StatusMsg: Installing 2010 RunTime...
+; Hm, I wonder if we need to manually delete vcredist_x86.exe as well.
+Filename: {app}\PPSSPPWindows.exe; Description: {cm:LaunchProgram,{cm:AppName}}; Flags: nowait postinstall skipifsilent
+
+[Icons]
+Name: "{commonprograms}\PPSSPP"; Filename: "{app}\PPSSPPWindows.exe"
+
+[Code]
+begin
+
+if (not isUninstaller()) then begin
+  SaveStringToFile(ExpandFilename('installed.txt'), 'Installed' + #13#10, False);
+end
+
+end.

redist

@@ -0,0 +1 @@
+Subproject commit 9d7d3ec5a0f8ddbeede4562627b6efb5c0b94e8e