glib2: require Ruby 1.9.3 or later
gdk3: require Ruby 1.9.3 or later
gtk3: require Ruby 1.9.3 or later
gvlc: require Ruby 1.9.3 or later
vte3: require Ruby 1.9.3 or later
Merge pull request #171 from myokoym/require-ruby-1-9-3-or-later

Require Ruby 1.9.3 or later

Patch by Masafumi Yokoyama. Thanks!!!
gtksourceview3: update README
gtk3 README: fix link
gstreamer: add README
vte3: update README
poppler: use " (double quote) for string literal
poppler: use OptionParser
poppler: add --page option
vte3: remove deprecated argument
goocanvas: add missing dependency

Ruby/GooCanvas migrated to Ruby/GObjectIntrospection based bindings.
gdk_pixbuf2 windows: remove needless zlib and libpng download

[ruby-gnome2-devel-ja]

Reported by Masafumi Yokoyama. Thanks!!!
gdk_pixbuf2 windows: use rcairo on Windows for libpng and zlib
gdk_pixbuf2 windows: depend on cairo on Windows
Added check for CAIRO version for method create, it requires CAIRO >= 1.8
Merge pull request #172 from matobinder/master

Added check for CAIRO version for create() method

Patch by matobinder. Thanks!!!