VS10: Honor /DELAYSIGN and /KEYFILE flags (#13601)

Fix the VS 10 link flag map to name the project file entries correctly.
The VS 11 link flag map already has the correct names.  Generate the
entries in the <PropertyGroup> along with incremental linking options.
Drop them from the <Link> element because VS does not use them.

Source/cmVS10LinkFlagTable.h

@@ -182,8 +182,8 @@ static cmVS7FlagTable cmVS10LinkFlagTable[] =
   {"SupportUnloadOfDelayLoadedDLL", "DELAY:UNLOAD", "", "true", 0},
   {"SupportNobindOfDelayLoadedDLL", "DELAY:NOBIND", "", "true", 0},
   {"Profile", "PROFILE", "", "true", 0},
-  {"DelaySign", "DELAYSIGN:NO", "", "false", 0},
-  {"DelaySign", "DELAYSIGN", "", "true", 0},
+  {"LinkDelaySign", "DELAYSIGN:NO", "", "false", 0},
+  {"LinkDelaySign", "DELAYSIGN", "", "true", 0},
   {"CLRUnmanagedCodeCheck", "CLRUNMANAGEDCODECHECK:NO", "", "false", 0},
   {"CLRUnmanagedCodeCheck", "CLRUNMANAGEDCODECHECK", "", "true", 0},
   {"ImageHasSafeExceptionHandlers", "SAFESEH:NO", "", "false", 0},
@@ -294,7 +294,7 @@ static cmVS7FlagTable cmVS10LinkFlagTable[] =
   {"MergeSections", "MERGE:",
    "Merge Sections",
    "", cmVS7FlagTable::UserValue},
-  {"KeyFile", "KEYFILE:",
+  {"LinkKeyFile", "KEYFILE:",
    "Key File",
    "", cmVS7FlagTable::UserValue},
   {"KeyContainer", "KEYCONTAINER:",

Source/cmVisualStudio10TargetGenerator.cxx

@@ -1106,6 +1106,23 @@ OutputLinkIncremental(std::string const& configName)
   *this->BuildFileStream << (manifest?manifest:"true")
                          << "</GenerateManifest>\n";
   linkOptions.RemoveFlag("GenerateManifest");
+
+  // Some link options belong here.  Use them now and remove them so that
+  // WriteLinkOptions does not use them.
+  const char* flags[] = {
+    "LinkDelaySign",
+    "LinkKeyFile",
+    0};
+  for(const char** f = flags; *f; ++f)
+    {
+    const char* flag = *f;
+    if(const char* value = linkOptions.GetFlag(flag))
+      {
+      this->WritePlatformConfigTag(flag, configName.c_str(), 3);
+      *this->BuildFileStream << value << "</" << flag << ">\n";
+      linkOptions.RemoveFlag(flag);
+      }
+    }
 }
 
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