Regexp escape VM names when matching for them.

CHANGELOG.md

@@ -1,6 +1,6 @@
 ## 0.9.4 (unreleased)
 
-
+  - Match VM names that have parens, brackets, etc.
 
 ## 0.9.3 (January 24, 2012)
 

lib/vagrant/driver/virtualbox_4_0.rb

@@ -172,7 +172,7 @@ module Vagrant
         end
 
         output = execute("list", "vms")
-        if output =~ /^"#{name}" \{(.+?)\}$/
+        if output =~ /^"#{Regexp.escape(name)}" \{(.+?)\}$/
           return $1.to_s
         end
 

lib/vagrant/driver/virtualbox_4_1.rb

@@ -172,7 +172,7 @@ module Vagrant
         end
 
         output = execute("list", "vms")
-        if output =~ /^"#{name}" \{(.+?)\}$/
+        if output =~ /^"#{Regexp.escape(name)}" \{(.+?)\}$/
           return $1.to_s
         end