Remove all cvsignore files.

* .cvsignore, bench/.cvsignore,
bench/emptchk/.cvsignore, bench/emptchk/models/.cvsignore,
bench/ltl2tgba/.cvsignore, buddy/.cvsignore,
buddy/doc/.cvsignore, buddy/examples/.cvsignore,
buddy/examples/adder/.cvsignore,
buddy/examples/bddcalc/.cvsignore,
buddy/examples/bddtest/.cvsignore,
buddy/examples/calculator/.cvsignore,
buddy/examples/cmilner/.cvsignore,
buddy/examples/fdd/.cvsignore,
buddy/examples/internal/.cvsignore,
buddy/examples/milner/.cvsignore,
buddy/examples/money/.cvsignore,
buddy/examples/queen/.cvsignore,
buddy/examples/solitare/.cvsignore,
buddy/src/.cvsignore, buddy/tools/.cvsignore,
doc/.cvsignore, iface/.cvsignore,
src/.cvsignore, src/ltlast/.cvsignore,
src/ltlenv/.cvsignore, src/ltlparse/.cvsignore,
src/ltlvisit/.cvsignore, src/misc/.cvsignore,
src/sanity/.cvsignore, src/tests/.cvsignore,
src/twa/.cvsignore, tools/.cvsignore,
wrap/.cvsignore, wrap/python/.cvsignore,
wrap/python/tests/.cvsignore: here.

bench/.cvsignore

@@ -1,2 +0,0 @@
-Makefile
-Makefile.in

bench/emptchk/.cvsignore

@@ -1,4 +0,0 @@
-Makefile
-Makefile.in
-defs
-pan*

bench/emptchk/models/.cvsignore

@@ -1 +0,0 @@
-*.tgba

bench/ltl2tgba/.cvsignore

@@ -1,7 +0,0 @@
-Makefile.in
-Makefile
-*.cfg
-*.txt
-*.log
-defs
-ltl2baw.pl