Split ArcanistXHPASTLinter::LINT_FORMATTING_CONVENTIONS into seperate lint names
Split ArcanistXHPASTLinter::LINT_FORMATTING_CONVENTIONS into seperate lint names

Summary:
Split ArcanistXHPASTLinter::LINT_FORMATTING_CONVENTIONS into seperate
lint names so that each linting rule can be controled sperately

Test Plan:
This shouldn't break anything, if it does we'll know soon enough.
<epriestley> Better things break loudly/obviously I think.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, epriestley

Differential Revision: https://secure.phabricator.com/D1495

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