msi: Reduce destination file name used in the MoveFiles action to the long file name.

[Rob Shearman]

---
 dlls/msi/action.c |   22 ++++++++++++++++------
 1 files changed, 16 insertions(+), 6 deletions(-)

There doesn't appear to be any documentation on MSDN suggesting this
behaviour but it fixes the following snippet of a log from a
customised Office 2003 installer:

0065:trace:msi:msi_move_file copying
L"C:\\windows\\temp\\~OCW0023.TMP" -> L"C:\\Program Files\\Microsoft
Office\\sfn|custom11.prf"
0065:Call KERNEL32.CopyFileW(0105f4d0
L"C:\\windows\\temp\\~OCW0023.TMP",0105f1f8 L"C:\\Program
Files\\Microsoft Office\\sfn|custom11.prf",00000000) ret=7eded205
0065:Ret  KERNEL32.CopyFileW() retval=00000000 ret=7eded205
0065:warn:msi:msi_move_file CopyFile failed: 123
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