* global.data globals.c tree.c include/libxml/globals.h                         win32/libxml2.def.src win32/dsp/libxml2.def.src: changed                        default value for global parameter xmlIndentTreeOutput to 1 and                 introduced new global parameter xmlTreeIndentString (the string                 used to do one-level indent) with default value "  " (as it was                 in tree.c)