[Ada] Preparation for multi-unit source support in gprbuild

[Arnaud Charlet]

> make[1]: *** No rule to make target `ada/instpar.adb', needed by
> `ada/instpar.o'.  Stop.

Sorry, a typo caused by a wrong merge. Fix now installed.

2009-11-30  Arnaud Charlet  <charlet@adacore.com>

	* gcc-interface/Make-lang.in: Fix typo.

===================================================================
--- gcc-interface/Make-lang.in  (revision 154769)
+++ gcc-interface/Make-lang.in  (working copy)
@@ -191,7 +191,6 @@ GNAT_ADA_OBJS =     \
  ada/i-cstrin.o        \
  ada/impunit.o \
  ada/inline.o  \
- ada/instpar.o \
  ada/interfac.o        \
  ada/itypes.o  \
  ada/krunch.o  \

I'll double check that dependencies are good as well.

Arno