Auto merge of #78 - mbrubeck:update, r=jdm

Update to harfbuzz 1.4.8.

Update the bundled Harfbuzz source to 1.4.8, and regenerate bindings.  This is a non-breaking change (tested against Servo and some other downstream crates).

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harfbuzz-sys/Cargo.toml

@@ -1,13 +1,13 @@
 [package]
 name = "harfbuzz-sys"
-version = "0.1.12"
+version = "0.1.13"
 
 authors = ["The Servo Project Developers"]
 license = "MIT"
 
 description = "Rust bindings to the HarfBuzz text shaping engine"
 repository = "https://github.com/servo/rust-harfbuzz"
-documentation = "http://doc.servo.org/harfbuzz_sys/"
+documentation = "https://docs.rs/harfbuzz-sys/"
 keywords = ["opentype", "font", "text", "layout", "unicode"]
 
 links = "harfbuzz"

harfbuzz-sys/harfbuzz/BUILD.md

@@ -0,0 +1,36 @@
+On Linux, install the development packages for FreeType,
+Cairo, and GLib. For example, on Ubuntu / Debian, you would do:
+* sudo apt-get install gcc g++ libfreetype6-dev libglib2.0-dev libcairo2-dev
+
+whereas on Fedora, RHEL, CentOS, and other Red Hat based systems you would do:
+* sudo yum install gcc gcc-c++ freetype-devel glib2-devel cairo-devel
+
+on the Mac, using MacPorts:
+* sudo port install freetype glib2 cairo
+
+or using Homebrew:
+* brew install freetype glib cairo
+
+If you are using a tarball, you can now proceed to running configure and make
+as with any other standard package. That should leave you with a shared
+library in src/, and a few utility programs including hb-view and hb-shape
+under util/.  From the tarball, NMake Makefiles are also provided in win32/,
+which supports building HarfBuzz using Visual Studio, with a README.txt that
+gives instructions on building using NMake.
+If you are bootstraping from git, you need a few more tools before you can
+run autogen.sh for the first time. Namely, pkg-config and ragel. Again,
+on Ubuntu / Debian:
+* sudo apt-get install autoconf automake libtool pkg-config ragel gtk-doc-tools
+
+and on Fedora, RHEL, CentOS:
+* sudo yum install autoconf automake libtool pkgconfig ragel gtk-doc
+
+on the Mac, using MacPorts:
+* sudo port install autoconf automake libtool pkgconfig ragel gtk-doc
+
+or using Homebrew:
+* brew install autoconf automake libtool pkgconfig ragel gtk-doc
+
+To build the Python bindings, you also need:
+
+* brew install pygobject3