Fixed two bugs in MacOSX framework handling spotted by Edward Moy:

- In the top level Makefile, the argument to -install_name should be
  prepended with /System/Library/Frameworks/, so it is an absolute path.
- In the top level Makefile, because of 2), RUNSHARED needs to be set to
  DYLD_FRAMEWORK_PATH=<path to local framework> and $(RUNSHARED) prepended
  to the $(MAKE) lines in the frameworkinstallmaclib and
  frameworkinstallapps targets.
diff --git a/Makefile.pre.in b/Makefile.pre.in
index 27e8090..d7de18e 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -858,14 +858,14 @@
 # This installs Mac/Lib into the framework
 frameworkinstallmaclib:
 	$(MAKE) -f $(srcdir)/Mac/OSX/Makefile installmacsubtree \
-		BUILDPYTHON=./$(BUILDPYTHON) DIRMODE=$(DIRMODE) FILEMODE=$(FILEMODE) \
+		$(RUNSHARED) BUILDPYTHON=./$(BUILDPYTHON) DIRMODE=$(DIRMODE) FILEMODE=$(FILEMODE) \
 		srcdir=$(srcdir) builddir=. prefix=$(prefix) LIBDEST=$(LIBDEST) \
 		DESTDIR=$(DESTDIR)
 
 # This installs the IDE, the Launcher and other apps into /Applications
 frameworkinstallapps:
 	$(MAKE) -f $(srcdir)/Mac/OSX/Makefile installapps \
-		BUILDPYTHON=./$(BUILDPYTHON) DIRMODE=$(DIRMODE) FILEMODE=$(FILEMODE) \
+		$(RUNSHARED) BUILDPYTHON=./$(BUILDPYTHON) DIRMODE=$(DIRMODE) FILEMODE=$(FILEMODE) \
 		srcdir=$(srcdir) builddir=. DESTDIR=$(DESTDIR)
 
 # This install the unix python and pythonw tools in /usr/local/bin
@@ -878,7 +878,7 @@
 # It is not part of a normal frameworkinstall
 frameworkinstallextras:
 	$(MAKE) -f $(srcdir)/Mac/OSX/Makefile installextras \
-		BUILDPYTHON=./$(BUILDPYTHON) DIRMODE=$(DIRMODE) FILEMODE=$(FILEMODE) \
+		$(RUNSHARED) BUILDPYTHON=./$(BUILDPYTHON) DIRMODE=$(DIRMODE) FILEMODE=$(FILEMODE) \
 		srcdir=$(srcdir) builddir=. DESTDIR=$(DESTDIR)
 
 # This installs a few of the useful scripts in Tools/scripts