Do not track files during pre-compilation (#731)

This might be a very bad idea. Tries to fix #728

Author: LilithHafner

src/packagedef.jl

@@ -1254,6 +1254,7 @@ function init_worker(p)
 end
 
 function __init__()
+    ccall(:jl_generating_output, Cint, ()) == 1 && return nothing
     run_on_worker = get(ENV, "JULIA_REVISE_WORKER_ONLY", "0")
     if !(myid() == 1 || run_on_worker == "1")
         return nothing