Fixed ninja build issues relating to use of $(DESTDIR)

We use ${DESTDIR} syntax now instead of $(DESTDIR) because that syntax
works both is the shell (at least it does for bash) and for make (at
least it does for GNU Make)

Patch By: Dan Liew

llvm-svn: 200414
diff --git a/libclc/configure.py b/libclc/configure.py
index 8a49397..525fdbe 100755
--- a/libclc/configure.py
+++ b/libclc/configure.py
@@ -220,15 +220,15 @@
     b.default(builtins_bc)
 
 
-install_cmd = ' && '.join(['mkdir -p $(DESTDIR)/%(dst)s && cp -r %(src)s $(DESTDIR)/%(dst)s' % 
+install_cmd = ' && '.join(['mkdir -p ${DESTDIR}/%(dst)s && cp -r %(src)s ${DESTDIR}/%(dst)s' %
                            {'src': file,
                             'dst': libexecdir}
                            for (file, dest) in install_files_bc])
-install_cmd = ' && '.join(['%(old)s && mkdir -p $(DESTDIR)/%(dst)s && cp -r %(srcdir)s/generic/include/clc $(DESTDIR)/%(dst)s' %
+install_cmd = ' && '.join(['%(old)s && mkdir -p ${DESTDIR}/%(dst)s && cp -r %(srcdir)s/generic/include/clc ${DESTDIR}/%(dst)s' %
                            {'old': install_cmd,
                             'dst': includedir,
                             'srcdir': srcdir}])
-install_cmd = ' && '.join(['%(old)s && mkdir -p $(DESTDIR)/%(dst)s && cp -r libclc.pc $(DESTDIR)/%(dst)s' %
+install_cmd = ' && '.join(['%(old)s && mkdir -p ${DESTDIR}/%(dst)s && cp -r libclc.pc ${DESTDIR}/%(dst)s' %
                            {'old': install_cmd, 
                             'dst': pkgconfigdir}])