add function getFromProject

repeat only PeekMessage calls until it succeeds (don't repeat MsgWaitForMultipleObjects)

used by the linux version

because the wait system call on linux yields this value

instead of dirseparator from StdSystem from Object IO

from Object IO

support p in ccall

to implement parallel code generation

if other compilers have finished as well, when using BatchBuild,
pass interact flag to update_type_window

errors to stdout