* Makefile.am: cleanup, creating a new legacy.c module,
made sure make tests ran in reduced conditions
* SAX.c SAX2.c configure.in entities.c globals.c parser.c
parserInternals.c tree.c valid.c xlink.c xmlIO.c xmlcatalog.c
xmlmemory.c xpath.c xmlmemory.c include/libxml/xmlversion.h.in:
increased the modularization, allow to configure out
validation code and legacy code, added a configuration
option --with-minimum compiling only the mandatory code
which then shrink to 200KB.
Daniel