Attempted to fix strings serialization process
Merge pull request #818 from cwidmer/master

fixed typo
Add LinearARDKernel and GaussianARDKernel to modular interface
Merge pull request #819 from vigsterkr/latent

Add LinearARDKernel and GaussianARDKernel to modular interface
Fixed math issues in LPP
Removed junk debug print in LPP
perl_modular:allows to handle in-type map shogun::SGVector<type> being PDL or  SWIGTYPE_p_shogun__SGVectorT.

added PDL typemap .. in case.
re-enabled vector operator + and += for perl.
removed a few comments and dead code, compacted SWIGPERL part.
added SWIGPERL hooks to implement CLatentModel and CData.

CObjectDetector,
example of classifier in examples/undocumented/libshogun/classifier_latent_svm.cpp
in SWIGPERL : enabled more operators wraps,  and patched complains reserved words "next".
tests/perl_modular: cast strings: true<-> 1  and false<->0.

also enabled some progress and debugging on the classifier.
perl_modular: fix IN/OUT transfer with PDL snd SGmatrix/NDarray as memory sequence is transposed from one to the other.

also moved main algo in pdl.i
done some reformating.
tests/perl_modular: attempt  to report test results more rightly.
Merge pull request #820 from ptizoom/perl_121111

more perl WIP updates
added support for python3 buffer protocol
Merge pull request #821 from gsomix/python3

Added support for python3 buffer protocol
perl_modular: fixed matrix SG to PDL conversion.

added SGMatrix<> typemap for direct use through perl.
messed up with indentation as usual.
tests/perl_modular: increase max_train_time of linear classifiers
Merge pull request #822 from ptizoom/perl_121113

Perl WIP updates