Added support for writing USERROW memory

.gitignore

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+avrdude
+libavrdude.a
+libavrdude.la
+Makefile
+Makefile.in
+*.o
+*.lo
+libtool
+ltmain.sh
+.deps/
+.libs/
+INSTALL
+ac_cfg.h
+ac_cfg.h.in
+aclocal.m4
+autom4te.cache/
+avrdude.conf
+avrdude.conf.tmp
+avrdude.spec
+compile
+config.guess
+config.log
+config.status
+config.sub
+config_gram.c
+config_gram.h
+configure
+configure~
+depcomp
+doc/mdate-sh
+doc/texinfo.tex
+install-sh
+lexer.c
+missing
+stamp-h1
+windows/.deps/
+ylwrap
+m4/
+*.bin