Update Opus to 1.0.2.

doc/Makefile.am

 ## Process this file with automake to produce Makefile.in
 
 DOCINPUTS = $(top_srcdir)/include/opus.h \
             $(top_srcdir)/include/opus_multistream.h \
             $(top_srcdir)/include/opus_defines.h \
             $(top_srcdir)/include/opus_types.h \
             $(top_srcdir)/include/opus_custom.h \
             $(top_srcdir)/doc/header.html \
             $(top_srcdir)/doc/footer.html \
             $(top_srcdir)/doc/customdoxygen.css
 
 EXTRA_DIST = customdoxygen.css Doxyfile.in footer.html header.html opus_logo.svg
 
 
 if HAVE_DOXYGEN
 
 all-local: doxygen-build.stamp
 
 doxygen-build.stamp: Doxyfile $(DOCINPUTS)
         doxygen
         touch $@
 
 install-data-local:
         for f in `find html -type f \! -name "installdox"`; do  \
-                $(INSTALL_DATA) -D $$f $(DESTDIR)$(docdir)/$$f; \
+                $(INSTALL) -d $(DESTDIR)$(docdir)/html/search;  \
+                $(INSTALL_DATA) $$f $(DESTDIR)$(docdir)/$$f;    \
         done
 
         $(INSTALL) -d $(DESTDIR)$(mandir)/man3
         cd man && find man3 -type f -name opus_*.3 \
                   -exec $(INSTALL_DATA) \{} $(DESTDIR)$(mandir)/man3 \;
 
 clean-local:
         $(RM) -r html
         $(RM) -r latex
         $(RM) -r man
         $(RM) doxygen-build.stamp
 
 uninstall-local:
         $(RM) -r $(DESTDIR)$(docdir)/html
         $(RM) $(DESTDIR)$(mandir)/man3/opus_*.3 $(DESTDIR)$(mandir)/man3/opus.h.3
 
 endif