* it was necessary to increase the upstream version so I could
   upload new versions to launchpad while debugging PPA build issues.
 * ChangeLog finalized for v0.6.4
 * SciTECO requires at least libglib v2.28 (but that's only a guess)

 * it also sets the compatibility level to 7 which was required
   when building for Ubuntu Lucid. This version cannot be supported
   however since its libglib version is too old.

this should simplify building SciTECO for new users

 * compiler and archiver are passed down from Autoconf,
   so cross-compiling should work transparently
 * `make clean` will also clean the Scintilla source tree
 * there is no longer any need for "source bundles" as
   tar balls also contain Scintilla/Scinterm now
 * building from Git is not much more difficult than building
   from a tar ball
 * The versions of Scintilla/Scinterm embedded as submodules
   already contain all the patches necessary (currently none are
   necessary), so there's no need to have patch files in the
   repository
 * INSTALL instructions have been rewritten
 * the --with-scintilla and --with-scinterm site-config options
   have been kept. But they should be rarely necessary now.

 * allows us to remove most patches. One however is still necessary
   (Scinterm Makefile bug!)
 * TECO-style control code echoing is now set up using the SCI_SETREPRESENTATION message
 * updated copyrights
 * updated TODO