Move installer related stuff into admin/win/nsi.

admin/win/nsi/nsis_uac/UAC_GetUserShellFolderPath.nsi

@@ -0,0 +1,30 @@
+RequestExecutionLevel user /* RequestExecutionLevel REQUIRED! */
+!define APPNAME "UAC_GetUserShellFolderPath"
+Name "${APPNAME}"
+OutFile "${APPNAME}.exe"
+ShowInstDetails show
+
+!include UAC.nsh
+!include LogicLib.nsh
+
+page instfiles
+
+Function .onInit
+${UAC.I.Elevate.AdminOnly}
+FunctionEnd
+
+!ifndef CSIDL_PERSONAL
+	!define CSIDL_PERSONAL 0x0005 ;My Documents
+!endif
+Section
+
+/*
+You can specify a fallback value in the 2nd parameter, it is used if the installer is not elevated 
+or running on NT4/Win9x or on errors.
+If you just want to check for success, use "" as the 2nd parameter and compare $0 with "" 
+*/
+UAC::GetShellFolderPath ${CSIDL_PERSONAL} $Documents
+DetailPrint MyDocs=$0
+
+
+SectionEnd