Add psr0 classloader to info.xml for core extensions

[mattwire]

Overview

@totten I think this is correct?

Before

Missing psr0 classloader definition

After

psr0 classloader definition

Technical Details

Comments

[civibot]

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[demeritcowboy]

Some of these don't have CRM folders. It will save a couple hundred thousand millionths of a second to just leave it out.

[colemanw]

I saved thousands more milliseconds by hitting "Merge" without thinking too hard about it.