shell32: Ensure that tmpdir contains long path name.

[Marvin]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?
Full results can be found at
https://newtestbot.winehq.org/JobDetails.pl?Key=5017

Your paranoid android.


=== wxppro (32 bit shlexec) ===
shlexec.c:1211: Test failed: expected 1 args, got 4
shlexec.c:2283: Test failed: argcA expected 5, but got 4

=== w8 (32 bit shlexec) ===
shlexec.c:139: Test failed: ShellExecute(verb="", file="C:\Users\winetest\AppData\Local\Temp\wtD34F.tmp\test file.noassoc") WaitForSingleObject returned 258
shlexec.c:139: Test failed: ShellExecute(file="C:\Users\winetest\AppData\Local\Temp\wtD34F.tmp\test file.noassoc") WaitForSingleObject returned 258
shlexec.c:1532: Test failed: ShellExecute(file="C:\Users\winetest\AppData\Local\Temp\wtD34F.tmp\test file.noassoc") failed: rc=33 err=2
shlexec.c:1564: Test failed: argvA4 expected 'C:\Users\winetest\AppData\Local\Temp\wtD34F.tmp\test file.noassoc', but key not found or empty
shlexec.c:139: Test failed: ShellExecute(verb="", file="C:\Users\winetest\AppData\Local\Temp\wtD34F.tmp\test file.shlexec.noassoc") WaitForSingleObject returned 258
shlexec.c:139: Test failed: ShellExecute(file="C:\Users\winetest\AppData\Local\Temp\wtD34F.tmp\test file.shlexec.noassoc") WaitForSingleObject returned 258
shlexec.c:1532: Test failed: ShellExecute(file="C:\Users\winetest\AppData\Local\Temp\wtD34F.tmp\test file.shlexec.noassoc") failed: rc=33 err=2
shlexec.c:1564: Test failed: argvA4 expected 'C:\Users\winetest\AppData\Local\Temp\wtD34F.tmp\test file.shlexec.noassoc', but key not found or empty
shlexec.c:139: Test failed: ShellExecute(verb="", file="C:\Users\winetest\AppData\Local\Temp\wtD34F.tmp\test file.noassoc", params="shlexec "C:\Users\winetest\AppData\Local\Temp\wtD34F.tmp\wtD35F.tmp" Exec") WaitForSingleObject returned 258