Cannot run pike files stored on FAT drives

Imported from http://bugzilla.roxen.com/bugzilla/show_bug.cgi?id=5939

Reported by Payman Delshad payman@opera.com

Cannot run pike files that are stored on a TrueCrypt FAT drive. (Note: This problem does not happen with TrueCrypt NTFS drives, for instance.)

Steps to reproduce:

• Install TrueCrypt (http://www.truecrypt.org/).
• Create an encrypted FAT drive.
• Mount the drive. (e.g. on F:)
• Create a pike file on the mounted drive. (e.g. F:\file.pike)
• In windows command prompt, try running "F:> pike file.pike".

Actual result: The file is not run and I get the following error message: Could not find file "F:/file.pike".

Expected result: Pike should run the file.