Fix bogon which gives incorrect setting for GhcWithInterpreter on solaris2.
# Include GHCi in the compiler. Default to NO for the time being.
-ifneq "$(findstring $(HostOS_CPP), linux solaris freebsd netbsd openbsd)" ""
+ifneq "$(findstring $(HostOS_CPP), linux solaris2 freebsd netbsd openbsd)" ""
GhcWithInterpreter=YES
ifeq "$(HaveLibDL)" "YES"
SRC_HC_OPTS += -ldl