msvcp: Implement the WCHAR version of _Link.

dlls/msvcp120/msvcp120.spec

@@ -1533,8 +1533,8 @@
 @ cdecl -arch=win64 ?_Launch@_Pad@std@@QEAAXPEAU_Thrd_imp_t@@@Z(ptr ptr) _Pad__Launch
 @ cdecl -arch=win32 ?_Link@sys@tr2@std@@YAHPBD0@Z(str str) tr2_sys__Link
 @ cdecl -arch=win64 ?_Link@sys@tr2@std@@YAHPEBD0@Z(str str) tr2_sys__Link
-@ stub -arch=win32 ?_Link@sys@tr2@std@@YAHPB_W0@Z
-@ stub -arch=win64 ?_Link@sys@tr2@std@@YAHPEB_W0@Z
+@ cdecl -arch=win32 ?_Link@sys@tr2@std@@YAHPB_W0@Z(wstr wstr) tr2_sys__Link_wchar
+@ cdecl -arch=win64 ?_Link@sys@tr2@std@@YAHPEB_W0@Z(wstr wstr) tr2_sys__Link_wchar
 @ cdecl -arch=win32 ?_Locimp_Addfac@_Locimp@locale@std@@CAXPAV123@PAVfacet@23@I@Z(ptr ptr long) locale__Locimp__Locimp_Addfac
 @ cdecl -arch=win64 ?_Locimp_Addfac@_Locimp@locale@std@@CAXPEAV123@PEAVfacet@23@_K@Z(ptr ptr long) locale__Locimp__Locimp_Addfac
 @ cdecl -arch=win32 ?_Locimp_ctor@_Locimp@locale@std@@CAXPAV123@ABV123@@Z(ptr ptr) locale__Locimp__Locimp_ctor

dlls/msvcp120_app/msvcp120_app.spec

@@ -1533,8 +1533,8 @@
 @ cdecl -arch=win64 ?_Launch@_Pad@std@@QEAAXPEAU_Thrd_imp_t@@@Z(ptr ptr) msvcp120.?_Launch@_Pad@std@@QEAAXPEAU_Thrd_imp_t@@@Z
 @ cdecl -arch=win32 ?_Link@sys@tr2@std@@YAHPBD0@Z(str str) msvcp120.?_Link@sys@tr2@std@@YAHPBD0@Z
 @ cdecl -arch=win64 ?_Link@sys@tr2@std@@YAHPEBD0@Z(str str) msvcp120.?_Link@sys@tr2@std@@YAHPEBD0@Z
-@ stub -arch=win32 ?_Link@sys@tr2@std@@YAHPB_W0@Z
-@ stub -arch=win64 ?_Link@sys@tr2@std@@YAHPEB_W0@Z
+@ cdecl -arch=win32 ?_Link@sys@tr2@std@@YAHPB_W0@Z(wstr wstr) msvcp120.?_Link@sys@tr2@std@@YAHPB_W0@Z
+@ cdecl -arch=win64 ?_Link@sys@tr2@std@@YAHPEB_W0@Z(wstr wstr) msvcp120.?_Link@sys@tr2@std@@YAHPEB_W0@Z
 @ cdecl -arch=win32 ?_Locimp_Addfac@_Locimp@locale@std@@CAXPAV123@PAVfacet@23@I@Z(ptr ptr long) msvcp120.?_Locimp_Addfac@_Locimp@locale@std@@CAXPAV123@PAVfacet@23@I@Z
 @ cdecl -arch=win64 ?_Locimp_Addfac@_Locimp@locale@std@@CAXPEAV123@PEAVfacet@23@_K@Z(ptr ptr long) msvcp120.?_Locimp_Addfac@_Locimp@locale@std@@CAXPEAV123@PEAVfacet@23@_K@Z
 @ cdecl -arch=win32 ?_Locimp_ctor@_Locimp@locale@std@@CAXPAV123@ABV123@@Z(ptr ptr) msvcp120.?_Locimp_ctor@_Locimp@locale@std@@CAXPAV123@ABV123@@Z

dlls/msvcp140/msvcp140.spec

@@ -3667,7 +3667,7 @@
 @ stub _LSinh
 @ extern _LSnan _LSnan
 @ stub _Last_write_time
-@ stub _Link
+@ cdecl _Link(wstr wstr) tr2_sys__Link_wchar
 @ cdecl _Lock_shared_ptr_spin_lock()
 @ cdecl _Lstat(wstr ptr)
 @ cdecl _Make_dir(wstr) tr2_sys__Make_dir_wchar

dlls/msvcp90/ios.c

@@ -15036,6 +15036,20 @@ int __cdecl tr2_sys__Link(char const* existing_path, char const* new_path)
     return GetLastError();
 }
 
+/* ?_Link@sys@tr2@std@@YAHPB_W0@Z */
+/* ?_Link@sys@tr2@std@@YAHPEB_W0@Z */
+/* _Link */
+int __cdecl tr2_sys__Link_wchar(WCHAR const* existing_path, WCHAR const* new_path)
+{
+    TRACE("(%s %s)\n", debugstr_w(existing_path), debugstr_w(new_path));
+    if(!existing_path || !new_path)
+        return ERROR_INVALID_PARAMETER;
+
+    if(CreateHardLinkW(new_path, existing_path, NULL))
+        return ERROR_SUCCESS;
+    return GetLastError();
+}
+
 /* ?_Symlink@sys@tr2@std@@YAHPBD0@Z */
 /* ?_Symlink@sys@tr2@std@@YAHPEBD0@Z */
 int __cdecl tr2_sys__Symlink(char const* existing_file_name, char const* file_name)