* Do not copy standalone IPP libraries to install for static builds

* Restored IPP installation under option

Added a sample file for qrcode detection in python

* sample python file for qrcode detection added in samples/python

* input taken using argparse and the indents were removed

* Removed unused variables

* updated the format and removed unused variables

Removed the use of global variables and used parameterised contructor instead

=set multi detection true by default

* added detection from camera

* samples(python): coding style in qrcode.py

`WCube` constructor reorders `min_point`, `max_point` parameters when necessary. I added this info to the description.

- It is safe to remove `explicit` keyword for constructors with 1
argument, because it is C++ specific keyword and does not affect any of
the generated binding.

original commit: 45263d76

remove comment in .ppm