Split nested namespaces declaration in two lines in accordance with C++ Style Guide.
-rw-r--r-- 520 AUTHORS
-rw-r--r-- 29504 ChangeLog
-rw-r--r-- 2623 LICENSE
-rw-r--r-- 27024 SConstruct
drwxr-xr-x - benchmarks
drwxr-xr-x - include
drwxr-xr-x - samples
drwxr-xr-x - src
drwxr-xr-x - test
drwxr-xr-x - tools