Create a dist target to build binary distributions.

I decided against having the git repo version number in the tarball's name,
so that we don't have to update the INSTALL.md with download instructions
every time we build new tarballs.

Makefile

@@ -33,7 +33,12 @@ install: release
  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) $(DESTDIR)/usr/share/julia/lib
+ install -v -C lib/libarpack.$(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
+
+dist: release
+ rm -fr dist julia-*.tar.gz
+ $(MAKE) install DESTDIR=dist
+ cd dist/usr/share && tar zcvf ../../../julia-`uname`.tar.gz *
 
 deb:
  fakeroot debian/rules binary