Replace libjpeg-9b by libjpeg-turbo-1.5.2 for Windows

It is faster than libjpeg and is used in MSYS2-fox as well.

Rakefile

@@ -138,7 +138,7 @@ Rake::ExtensionTask.new("fox16_c", gem_spec) do |ext|
       dlls += [
           "libfxscintilla-20.dll",
           "libFOX-1.6-0.dll",
-          "libjpeg-9.dll",
+          "libjpeg-62.dll",
           "libpng16-16.dll",
           "libtiff-5.dll",
           "zlib1.dll",
@@ -179,7 +179,12 @@ task 'gem:windows' => 'gem' do
 
   sh "bundle package"
   debug = "FXRUBY_MINGW_DEBUG=#{ENV['FXRUBY_MINGW_DEBUG'].inspect}" if ENV['FXRUBY_MINGW_DEBUG']
-  RakeCompilerDock.sh "bundle --local --without=test && rake cross native gem MAKE=\"nice make V=1 -j `nproc`\" #{debug}"
+  RakeCompilerDock.sh <<-EOT
+    sudo apt update &&
+    sudo apt install yasm &&
+    bundle --local --without=test &&
+    rake cross native gem MAKE=\"nice make V=1 -j `nproc`\" #{debug}
+  EOT
 end
 
 # Set environment variable SWIG_LIB to

ext/fox16_c/extconf.rb

@@ -27,8 +27,11 @@ LIBZ_SOURCE_URI = "http://zlib.net/fossils/zlib-#{LIBZ_VERSION}.tar.gz"
 LIBPNG_VERSION = ENV['LIBPNG_VERSION'] || '1.6.29'
 LIBPNG_SOURCE_URI = "http://prdownloads.sourceforge.net/libpng/libpng-#{LIBPNG_VERSION}.tar.gz"
 
-LIBJPEG_VERSION = ENV['LIBJPEG_VERSION'] || '9b'
-LIBJPEG_SOURCE_URI = "http://www.ijg.org/files/jpegsrc.v#{LIBJPEG_VERSION}.tar.gz"
+# LIBJPEG_VERSION = ENV['LIBJPEG_VERSION'] || '9b'
+# LIBJPEG_SOURCE_URI = "http://www.ijg.org/files/jpegsrc.v#{LIBJPEG_VERSION}.tar.gz"
+
+LIBJPEG_VERSION = ENV['LIBJPEG_VERSION'] || '1.5.2'
+LIBJPEG_SOURCE_URI = "https://downloads.sourceforge.net/libjpeg-turbo/libjpeg-turbo-#{LIBJPEG_VERSION}.tar.gz"
 
 LIBTIFF_VERSION = ENV['LIBTIFF_VERSION'] || '4.0.8'
 LIBTIFF_SOURCE_URI = "http://download.osgeo.org/libtiff/tiff-#{LIBTIFF_VERSION}.tar.gz"