[TYPO3-core] RFC: fix bug #3834 protect t3lib_formmail against abuse

[Martin Kutschker]

Martin Kutschker schrieb:
> Hi!
> 
> This is a ptach request for trunk and TYPO3-4_1.
> 
> Problem: t3lib_formmail could use is_uploaded_file() to prevent an abuse 
> with a manipluated $_FILES array.
> 
> Solution: check file and log abuse.

Committed.

Masi