[MPlayer-dev-eng] Configure confused by compilercache [PATCH]

[Arne Driescher]

Problem:
=======
A compiler cache as the one from
 http://www.erikyyy.de/compilercache/
adds additional (stupide) output lines before the output of
 gcc -dumpversion
The ./configure script expects a single line output and
fails therfore to detect the correct gcc version.

Solution:
=======
As is already done in the cc_name macro use only the 
last output line by changing
     cc_version=`( $_cc -dumpversion ) 2>&1`
to
     cc_version=`( $_cc -dumpversion ) 2>&1 | tail -1`

The attached trivial patch does exactly this.

Greetings,
Arne


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