Relax checks in pgo-instrumentation codegen test
Relax checks in pgo-instrumentation codegen test

Don't require a specific order for the per-function globals, and
don't require the locals to have private linkage (apparently
internal linkage is also possible).

graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust