Replaced Nokia copyrights in header

Replaced old Nokia copyrights with Digia copyrights.
"All rights reserved" strings without leading copyrights were
removed (for example, 'Copyright SomeCompany, all rights reserved
remain untouched).

Did NOT touch contact details, will change them later.
Excluded folders that have '3rdparty' in path.

Used command:
find . -path '*/3rdparty/*' -prune -o
-exec grep -ilI -E '.*Copyright.*Nokia.*' {} \; |
tee >(xargs sed -i -r '1,10 s/([ \t#*]*)(.*Copyright.*Nokia.*)/
\1Copyright \(C\) 2013 Digia Plc and\/or its subsidiary\(-ies\)\./I')
>(xargs sed -i -r '1,10 s/(^[ \t#*]*)(all rights reserved.*)/\1/I')

This excludes binary files and retains whitespace and #* characters in
the beginning of the edited lines.

Change-Id: Ied5eec778f0884c55c656575544d8ea54c38c716
Reviewed-by: Janne Anttila <janne.anttila@digia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>