Merge branch 'bugfix-96-Fix-build-script-for-16.04-installation-v3' of https://gitlab.eurecom.fr/oai/openairinterface5g into bugfix-96-Fix-build-script-for-16.04-installation-v3

libxslt1-dev is used at least for asn1 and usrp. It breaks the build when in
check_install_additional_tools().
Move it to to check_install_oai_software()

uhd is not part of ubuntu standard repositories >= 14.04.
Move the removal of uhd in its own space and do not fail if it doesn't exists.

Merge branch 'feature-34-test_framework' of https://gitlab.eurecom.fr/oai/openairinterface5g into feature-34-test_framework

The distinction common space/user space still requires some
careful examination.

clang have changed its default standard to C11 compilation and is stricter.
Ensure use of gnu89 standard to use pthread extension for --castxml-gccxml

It can't link because nas_config.c and rb_config.c was commented.

Th struct SamplesPacket is a type declaration. It is not defined
in memory and thus samplesCount can't be declared static.
Transform it to true cpp static variable class as this is c++ source.

bladerf ppa don't publish packages for Ubuntu 16.04.
There are official packages for bladerf so we use these.

It breaks apt-get remove command

Add --disable-hardware-dependency flag to avoid hardware need when compiling OAI.
For the momment it avoids to flash bladeRF hardware

libpgm-dev will add the dependency on libpgm 5.2.0 or 5.1.0 automatically
according to the ubuntu version

liblas3gf have been replaced by libblas3 on 16.04
liblas3* will be pulled by libblas-dev, so we don't need to add it to package list

This package is needed for the command add-apt-repository

Thank to Thomas Laurent for refactorize get_distribution_released

build_helper exits early on error. compilations() tells where the
compilation logs can be found after compiling it. So in case of error, it
was never displayed.
Add a log info before compiling