Rollup merge of #130048 - nebulark:runmake_llvm_pdbutil, r=jieyouxu

run-make-support: Add llvm-pdbutil

Add llvm-pdbutil to run-make-support, so we can write better unit tests for PDB specific features.

r? ````@jieyouxu````
````@rustbot```` label: +O-windows