Revert "boost:fix for naming convention and removal of previous libs"

This reverts commit 2ff374c64ea4eba51a7f46d8439cfbd68cfd638d.
boost: really fix naming convention and removal of previous libs

The `runtime-link` option is redundant as the build will default
to `link`. All the option does is to cause the mangling of
library names and can be removed.

Fixes #573 and #580