This fixes default gcc build for mipsMove dump_avail[] extern declaration and inlines into new header vm/vm_dumpset.h.
Patch adds a requirement that vm_param.h is included before vm_page.h to get dump_avail and related definitions available. It is somewhat kludgy, but the requirement that vm_param. h is included before rest of vm headers (except vm.h) is naturalThis fixes default gcc build for mips.