runtime: cleanup class_linker out-parameters and formatting

* Use out<T> instead of parameters
* Fixes up some other signatures to be more correct
* Reformat parameters to be one per line if they can't fit on one line
* Reformat locks to be one per line if they can't fit on the decl line

Change-Id: I1031cf4edc41f95b89edb343d43ef93e15384206
9 files changed