SERVER-10931 set ulimits in init scripts to match documentation

This sets resource limits across all Linux packages to match our
recommended settings -
http://docs.mongodb.org/manual/reference/ulimit/#recommended-settings
SERVER-10920 Give split packages consistent distinct summary descriptions
SERVER-5424 use NumberInt function template in mongoToV8Element

Signed-off-by: Matt Kangas <matt.kangas@mongodb.com>
Fix broken docs link

Signed-off-by: Matt Kangas <matt.kangas@mongodb.com>