Consistent naming for PackageManager methods.

When hidden PackageManager methods take a userId argument, they
should be named explicitly with the "AsUser" suffix.  This fixes
several lagging examples so that we can pave the way to safely
start passing flags to new methods without scary overloading.

Also fix spacing issues in various logging statements.

Change-Id: I1e42f7f66427410275df713bea04f6e0445fba28