Add LDFLAGS path to README.FreeBSD - it should always be safe to add /usr/local/lib anyway, and seems to be required for AC_CHECK_LIB on FreeBSD 11 without gcc
Add LDFLAGS path to README.FreeBSD - it should always be safe to add /usr/local/lib anyway, and seems to be required for AC_CHECK_LIB on FreeBSD 11 without gcc

flightaware/Pgtcl,flightaware/Pgtcl