[autoconf] check for -static-libstdc++ flag
[autoconf] check for -static-libstdc++ flag

tstack/lnav,sureshsundriyal/lnav,tstack/lnav,tstack/lnav,sureshsundriyal/lnav,sureshsundriyal/lnav,sureshsundriyal/lnav,tstack/lnav