Patch from Ralf Corsepius <corsepiu@faw.uni-ulm.de> to fix bug report

from Eric Norum <eric@cls.usask.ca>.  This patch was rtems-19990820-0-diff
from Ralf.

    FYI: In parallel to the transition to automake, RTEMS is on a transition
    from make-time configuration to per-bsp and per-bsp configuration at
    configuration-time. Due to this several changes to configuration files
    have been added and might have broken something that has been working
    previously. Most noticeable behavioral change is that you now are required
    to use @RTEMS_BSP@ instead of $(RTEMS_BSP) inside of any Makefile.ins
    which are configured or build as part of the source-tree.

    > It used to be that only RTEMS_MAKEFILE_PATH had to be set.  Why is this
    > no longer sufficient?

    It should still be working, if it doesn't, it has to be considered to be
    broken and should be fixed.

    I am not sure, but I assume you are using Makefile.inc - In this case, you
    have found a bug in Makefile.inc.in which should be worked-around by the
    patch below. If my assumption is wrong, I would need more details ...

c/src/make/Makefile.inc.in

@@ -2,6 +2,8 @@
 # BSP specific settings. To be included in application Makefiles
 #
 
+RTEMS_BSP = @RTEMS_BSP@
+
 prefix = @prefix@
 
 CC_FOR_TARGET = @CC_FOR_TARGET@