.gitignore: add patterns for build from root

.gitignore

@@ -1,4 +1,4 @@
-autom4te.cache/
+autom4te.cache
 configure
 Makefile.in
 config/compile
@@ -10,3 +10,42 @@ config/ltmain.sh
 config/missing
 config/mkinstalldirs
 config/test-driver
+**/Makefile
+*.o
+*.la
+*.lo
+.deps
+.libs
+config.log
+config.status
+contrib/addtiffo/addtiffo
+contrib/dbs/tiff-bi
+contrib/dbs/tiff-grayscale
+contrib/dbs/tiff-palette
+contrib/dbs/tiff-rgb
+contrib/iptcutil/iptcutil
+libtiff-4.pc
+libtiff/mkg3states
+libtiff/stamp-h1
+libtiff/stamp-h2
+libtiff/tif_config.h
+libtiff/tiffconf.h
+libtool
+tools/fax2ps
+tools/fax2tiff
+tools/pal2rgb
+tools/ppm2tiff
+tools/raw2tiff
+tools/tiff2bw
+tools/tiff2pdf
+tools/tiff2ps
+tools/tiff2rgba
+tools/tiffcmp
+tools/tiffcp
+tools/tiffcrop
+tools/tiffdither
+tools/tiffdump
+tools/tiffinfo
+tools/tiffmedian
+tools/tiffset
+tools/tiffsplit