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: Gabriel C <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Sam Ravnborg <[e-mail]>

scripts/ver_linux

···
 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}'