replaced SMP with multi-core in administrator's chapter of manual
===GT=== #3447
changes to V7_8-branch that make multi-core startd config section
consistent with master branch, without a cherry pick, since there is not
a good cherry pick with just these changes.
===GT=== #3447
Merge branch 'V7_8-branch'

Conflicts:
	doc/admin-man/multi-core.tex