* .gitignore: ignore exe/ruby and exe/.time instead of bin/ruby

because bin/ruby was renamed as exe/ruby at r59937.

follow-up: [Bug #13911]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60166 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

.gitignore

@@ -130,8 +130,6 @@ lcov*.info
 /benchmark/fasta.output.*
 /benchmark/wc.input
 
-/bin/ruby
-
 /enc/*.def
 /enc/*.exp
 /enc/*.lib
@@ -145,6 +143,10 @@ lcov*.info
 /enc/trans/*.lib
 /enc/trans/.time
 
+# /exe/
+/exe/ruby
+/exe/.time
+
 # /ext/
 /ext/extinit.c
 /ext/configure-ext.mk