added Boost download, compilation before using it

[abhay44]

@vicente-gonzalez-ruiz I automated the download and compilation process as you suggested and user can use the new downloaded Boost libraries rather than system libraries. The compilation runs fine, but I get some CMake warnings(link). I think the reason why we get these warnings is because system has old libraries.Apart from that all the automation works fine.

[vicente-gonzalez-ruiz]

Hi @abhay44. Loads of thanks for our PR! However, I have a final request. We would like that this new functionality where optional. The steps would be: (1) download boost from the OS's repository and P2PSP core from GutHub, (2) compile the core with make.py and if the compilation fails, (3) the user try again the compilation of everything with the functionality you have included in your PR. So, could you include a command-line parameter in make.py indicating that the user wants to compile against the downloaded copy of Bosst from sourceforge. Thanks!

[vicente-gonzalez-ruiz]

A note: please, include --no-check-certificate to the wget (it can fail in some situations).

[vicente-gonzalez-ruiz]

Another comment: please, check whether the Boost has been previously downloaded (make.py always download Boost, even if it has been downloaded just before). Thanks!

[abhay44]

@vicente-gonzalez-ruiz Updated!! Is this what you want to have?

[vicente-gonzalez-ruiz]

@abhay44 . Your PR works perfectly. As said before, thank you!