Added stub for DllInstall().

dlls/shell32/shell32.spec

@@ -391,4 +391,5 @@ init	Shell32LibMain
 # by-name routines relocated in win98
 
 1224 stdcall SHFileOperationA (ptr) SHFileOperationA # exported by name
-1225 stdcall SHFileOperationW (ptr) SHFileOperationW # exported by name
\ No newline at end of file
+1225 stdcall SHFileOperationW (ptr) SHFileOperationW # exported by name
+1226 stdcall DllInstall (long wstr) DllInstall # win98:202

dlls/shell32/shell32_main.c

@@ -879,3 +879,19 @@ BOOL WINAPI Shell32LibMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID fImpLoad)
 	}
 	return TRUE;
 }
+
+/*************************************************************************
+ * DllInstall         [SHELL32.202]
+ *
+ * PARAMETERS
+ *   
+ *    BOOL bInstall - TRUE for install, FALSE for uninstall
+ *    LPCWSTR pszCmdLine - command line (unused by shell32?)
+ */
+
+HRESULT WINAPI DllInstall(BOOL bInstall, LPCWSTR cmdline)
+{
+   FIXME_(shell)("(%s, %s): stub!\n", bInstall ? "TRUE":"FALSE", debugstr_w(cmdline));
+
+   return S_OK;		/* indicate success */
+}