Build jami-libclient (LRC) with libwrap enabled.

* packaging/rules/debian/rules (override_dh_auto_configure): Move
recipes to ...
(override_dh_auto_configure_build): ... here.  This is necessary as
the LRC now must find the share library of the daemon, hence it must
be built before the LRC configuration occurs.
<-DENABLE_LIBWRAP=true>: New option when configuring the LRC.
* packaging/rules/rpm/jami-libclient.spec (%build): Likewise.
* scripts/install.sh (lrc_cmake_flags): Likewise.
(OSTYPE): Remove variable.
(sharedLib): Remove variable.  The Jami daemon shared library is
needed when dynamically linking against it when libwrap is enabled.
* packaging/rules/rpm/jami-daemon.spec (%build): Drop the --disable-shared
option.
(%files): Register the libring.so dynamic library.
* packaging/rules/debian/rules (override_dh_auto_configure): Drop the
--disable-shared option.

GitLab: jami-packaging#101
Change-Id: Id1acaaf15a0f3d561c73bf34dde48f4eaf058eed