Move the exit() calls from libvsxu to Artiste/Player/Server

[saidinesh5]

[ 242s] vsxu-libs.x86_64: W: shared-lib-calls-exit /usr/lib64/libvsxu_engine_graphics.so exit@GLIBC_2.2.5
[ 242s] vsxu-libs.x86_64: W: shared-lib-calls-exit /usr/lib64/libvsxu_engine.so exit@GLIBC_2.2.5
[ 242s] This library package calls exit() or _exit(), probably in a non-fork()
[ 242s] context. Doing so from a library is strongly discouraged - when a library
[ 242s] function calls exit(), it prevents the calling program from handling the
[ 242s] error, reporting it to the user, closing files properly, and cleaning up any
[ 242s] state that the program has. It is preferred for the library to return an
[ 242s] actual error code and let the calling program decide how to handle the
[ 242s] situation.