Fixed: r4417 breaks MercurialAdapter with ruby 1.8.6 (#5117).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@4422 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redmine/scm/adapters/mercurial_adapter.rb

@@ -38,13 +38,13 @@ module Redmine
             # release number (eg 0.9.5 or 1.0) or as a revision
             # id composed of 12 hexa characters.
             theversion = hgversion_from_command_line
-            if m = theversion.match(/\b\d+(\.\d+)+\b/)
-              m[0].split(".").collect(&:to_i)
+            if m = theversion.match(%r{\A(.*?)((\d+\.)+\d+)})
+              m[2].scan(%r{\d+}).collect(&:to_i)
             end
           end
           
           def hgversion_from_command_line
-            %x{#{HG_BIN} --version}.lines.first.to_s
+            shellout("#{HG_BIN} --version") { |io| io.read }.to_s
           end
           
           def template_path