libtrading-config: Switch to getopt_long()
libtrading-config: Switch to getopt_long()

Signed-off-by: Pekka Enberg <add4fcd06328a394f0ad91feda7ee057316dc5ed@kernel.org>

mstanichenko/libtrading,NunoEdgarGub1/libtrading,fengzhyuan/libtrading,NunoEdgarGub1/libtrading,etoestja/libtrading,penberg/libtrading,fengzhyuan/libtrading,penberg/libtrading,svdev/libtrading,jvirtanen/libtrading,divaykin/libtrading,femtotrader/libtrading,mstanichenko/libtrading,libtrading/libtrading,femtotrader/libtrading,etoestja/libtrading,libtrading/libtrading,Bitcoinsulting/libtrading,jvirtanen/libtrading,Bitcoinsulting/libtrading,svdev/libtrading,divaykin/libtrading