scripts/ver_linux use 'gcc -dumpversion'

These magic greps and hacks in ver_linux to get the gcc version always break after some gcc releases.

Since now gcc >4.3 allows compiling with '--with-pkgversion' ( which can be everything 'My Cool Gcc' or something )
ver_linux will report random junk for these.

Simply use 'gcc -dumpversion' to get the gcc version which should always work.
Signed-off-by: NGabriel C <nix.or.die@googlemail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>

scripts/ver_linux

@@ -12,12 +12,9 @@ echo ' '
 uname -a
 echo ' '
 
-gcc --version 2>&1| head -n 1 | grep -v gcc | awk \
+gcc -dumpversion 2>&1| awk \
 'NR==1{print "Gnu C                 ", $1}'
 
-gcc --version 2>&1| grep gcc | awk \
-'NR==1{print "Gnu C                 ", $3}'
-
 make --version 2>&1 | awk -F, '{print $1}' | awk \
       '/GNU Make/{print "Gnu make              ",$NF}'