Add a .gitignore, now this project is in git.

.gitignore

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+/Makefile*
+/blackbox
+/bridges
+/cube
+/dominosa
+/fifteen
+/filling
+/fillingsolver
+/flip
+/galaxies
+/galaxiespicture
+/galaxiessolver
+/guess
+/inertia
+/keen
+/keensolver
+/latincheck
+/lightup
+/lightupsolver
+/loopy
+/loopysolver
+/magnets
+/magnetssolver
+/map
+/mapsolver
+/mines
+/mineobfusc
+/net
+/netslide
+/nullgame
+/numgame
+/obfusc
+/path
+/pattern
+/patternsolver
+/pearl
+/pearlbench
+/pegs
+/range
+/rect
+/samegame
+/separate
+/signpost
+/signpostsolver
+/singles
+/singlessolver
+/sixteen
+/slant
+/slantsolver
+/slide
+/slidesolver
+/sokoban
+/solo
+/solosolver
+/tents
+/tentssolver
+/towers
+/towerssolver
+/twiddle
+/undead
+/unequal
+/unequalsolver
+/unruly
+/unrulysolver
+/untangle
+/*.exe
+/*.obj
+/*.o
+/*.map
+/*.rsp
+/*notes
+/HACKING
+/*.hlp
+/*.cnt
+/*.chm
+/*.gid
+/*.GID
+/*.html
+/*.mips
+/*.class
+/*.jar
+/applet.manifest
+/puzzles.txt
+/*.app
+/*.dmg
+/*.res
+/*.inf
+/list.c
+/gamedesc.txt
+/build.log
+/build.out
+/org
+/*.ppc
+/*.i386
+/Puzzles.ppc.bin
+/Puzzles.i386.bin
+/version2.def
+/preprocessed.but
+/*.a
+/aclocal.m4
+/config.log
+/config.status
+/configure
+/depcomp
+/empty.h
+/install-sh
+/missing
+/compile
+/.deps
+/.dirstamp
+/icons/*.png
+/icons/*.ico
+/icons/*.rc
+/icons/*-icon.c
+/unfinished/divvy
+/unfinished/group
+/unfinished/numgame
+/unfinished/path
+/unfinished/pearl
+/unfinished/separate
+/unfinished/slide
+/unfinished/sokoban