Ruby 1.9.3 no longer supported (#25538).

git-svn-id: http://svn.redmine.org/redmine/trunk@16778 e93f8b46-1217-0410-a6f0-8f06a7374b81

Gemfile

@@ -5,11 +5,10 @@ if Gem::Version.new(Bundler::VERSION) < Gem::Version.new('1.5.0')
 end
 
 gem "rails", "4.2.8"
-gem "addressable", "2.4.0" if RUBY_VERSION < "2.0"
 gem "jquery-rails", "~> 3.1.4"
 gem "coderay", "~> 1.1.1"
 gem "request_store", "1.0.5"
-gem "mime-types", (RUBY_VERSION >= "2.0" ? "~> 3.0" : "~> 2.99")
+gem "mime-types", "~> 3.0"
 gem "protected_attributes"
 gem "actionpack-xml_parser"
 gem "roadie-rails", "~> 1.1.1"
@@ -18,7 +17,6 @@ gem "mimemagic"
 
 gem "nokogiri", (RUBY_VERSION >= "2.1" ? "~> 1.7.2" : "~> 1.6.8")
 gem "i18n", "~> 0.7.0"
-gem "ffi", "1.9.14", :platforms => :mingw if RUBY_VERSION < "2.0"
 
 # Request at least rails-html-sanitizer 1.0.3 because of security advisories
 gem "rails-html-sanitizer", ">= 1.0.3"
@@ -66,10 +64,9 @@ if File.exist?(database_file)
       when /postgresql/
         gem "pg", "~> 0.18.1", :platforms => [:mri, :mingw, :x64_mingw]
       when /sqlite3/
-        gem "sqlite3", (RUBY_VERSION < "2.0" && RUBY_PLATFORM =~ /mingw/ ? "1.3.12" : "~>1.3.12"),
-                       :platforms => [:mri, :mingw, :x64_mingw]
+        gem "sqlite3", "~>1.3.12", :platforms => [:mri, :mingw, :x64_mingw]
       when /sqlserver/
-        gem "tiny_tds", (RUBY_VERSION >= "2.0" ? "~> 1.0.5" : "~> 0.7.0"), :platforms => [:mri, :mingw, :x64_mingw]
+        gem "tiny_tds", "~> 1.0.5", :platforms => [:mri, :mingw, :x64_mingw]
         gem "activerecord-sqlserver-adapter", :platforms => [:mri, :mingw, :x64_mingw]
       else
         warn("Unknown database adapter `#{adapter}` found in config/database.yml, use Gemfile.local to load your own database gems")