Added simd8 usage on FHOG features computation

running variance output.

to automatically select the right mode.  The serialization format for bn_
layers has also changed, but the code will still be able to deserialize older
bn_ objects.

realistic.

to template arguments.  This way, the type of a network specifies the entire
network architecture and most of the time the user doesn't even need to do
anything with layer constructors.

variable decorator.

algorithms.

--HG--
rename : dlib/test/corellation_tracker.cpp => dlib/test/correlation_tracker.cpp

Corellation tracker options

if they should be default constructed.

statements when used inside a matlab mex file.