Fix Ruby bindings installation and also make the make output more informative.
Fix Ruby bindings installation and also make the make output more informative.

* Makefile.in (INSTALL_EXTRA_SWIG_RB): Insert a $(MKDIR), and some echos.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion