add a sensible .gitignore

.gitignore

+Makefile
+Makefile.in
+
+# ...
+.deps/
+.libs/
+*.o
+*.lo
+*.la
+*~
+
+# Various auto-tools artifacts
+/aclocal.m4
+/autom4te.cache/
+/compile
+/config.guess
+/config.h
+/config.h.in
+/config.h.in~
+/config.log
+/config.status
+/config.sub
+/configure
+/configure.lineno
+/depcomp
+/install-sh
+/libtool
+/ltmain.sh
+/m4/libtool.m4
+/m4/ltoptions.m4
+/m4/ltsugar.m4
+/m4/ltversion.m4
+/m4/lt~obsolete.m4
+/missing
+/stamp-h1
+TAGS
+
+# auto-generated files
+src/revision.h
+src/trackrdrd
+src/usage.h
+trackrdrd.3