Summary:
Modified the import script so it will only try to load a configurable
number of symbols at a time to avoid exhausting memory for large project
imports.
I haven't written a line of PHP in more than a decade, so please forgive
any stylistic or technical errors.
Test Plan: Ran the script on symbol table generated from linux kernel.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley
CC: Korvin, epriestley, aran
Maniphest Tasks: T4117
Differential Revision: https://secure.phabricator.com/D7596