* Makefile.in (cygserver.exe): Make cygwin_build a tooldir (-B instead
	of -L) to support bootstrapping.
	* kill.cc (forcekill): Use unsigned int printf format specifier and
	cast to avoid compiler warnings where DWORD value is used.
	* regtool.cc: Ditto, throughout.
	* Makefile.in (toollibdir): Define build and target dependent.
	(install-libs): Use $(toollibdir) rather than $(tooldir)/lib.
	(uninstall-libs): Ditto.
	(uninstall-man): Use $(DESTDIR)$(mandir) as in install-man, rather
	than $(tooldir)/man.