Add libgrisu to the install target.

Update the Makefile's install target to not use rm, cp, etc. and
instead use the install command.

The default install path is $(DESTDIR)/usr/share/julia. In case
DESTDIR is not specified during make, the installation happens in
/usr/share/julia.

I would have liked this to be /usr/local/julia instead, but the debian
package creation scripts do not like this, and it calls the install
target in the Makefile to create the package. I think /usr/share/julia
is acceptable as a default for the time being.

I believe this sufficiently addresses issue #6 even though the solution
is not completely satisfactory.

Makefile

@@ -17,14 +17,15 @@ sys.ji: VERSION j/sysimg.j j/start_image.j src/boot.j src/dump.c j/*.j
 	$(QUIET_JULIA) ./julia -b stage0.j
 
 install: release
-	rm -fr $(DESTDIR)/*
-	mkdir -p $(DESTDIR)/usr/share/julia/lib
-	cp -a julia* $(DESTDIR)/usr/share/julia
-	cp -a lib/libarpack.$(SHLIB_EXT) lib/libfdm.$(SHLIB_EXT) lib/libfftw3.$(SHLIB_EXT)* lib/libfftw3f.$(SHLIB_EXT)* lib/libpcre.$(SHLIB_EXT)* lib/libpcrecpp.$(SHLIB_EXT)* lib/libpcreposix.$(SHLIB_EXT)* lib/librandom.$(SHLIB_EXT) lib/liblapack.$(SHLIB_EXT) lib/libsuitesparse* $(DESTDIR)/usr/share/julia/lib
-	cp -r j $(DESTDIR)/usr/share/julia
-	cp -r contrib $(DESTDIR)/usr/share/julia
-	cp -r examples $(DESTDIR)/usr/share/julia
-	cp -r sys.ji $(DESTDIR)/usr/share/julia
+	install -d $(DESTDIR)/usr/share/julia/lib
+	install -d $(DESTDIR)/usr/share/julia/j
+	install -d $(DESTDIR)/usr/share/julia/contrib
+	install -d $(DESTDIR)/usr/share/julia/examples
+	install -v -C julia* $(DESTDIR)/usr/share/julia
+	install -v -C sys.ji $(DESTDIR)/usr/share/julia
+	install -v -C j/* $(DESTDIR)/usr/share/julia/j
+	install -v -C examples/* $(DESTDIR)/usr/share/julia/examples
+	install -v -C lib/libarpack.$(SHLIB_EXT) lib/libfdm.$(SHLIB_EXT) lib/libfftw3.$(SHLIB_EXT)* lib/libfftw3f.$(SHLIB_EXT)* lib/libpcre.$(SHLIB_EXT)* lib/libpcrecpp.$(SHLIB_EXT)* lib/libpcreposix.$(SHLIB_EXT)* lib/librandom.$(SHLIB_EXT) lib/liblapack.$(SHLIB_EXT) lib/libsuitesparse.$(SHLIB_EXT) lib/libgrisu.$(SHLIB_EXT) $(DESTDIR)/usr/share/julia/lib
 
 deb:
 	fakeroot debian/rules binary