Ports: Add libogg

This library will allow us to port more multimedia programs and games,
since it's a common dependency of such projects. I was looking at
Scummvm's dependencies in particular, with a goal of porting them all
eventually, so that we can have Myst running in Serenity!

Ports/AvailablePorts.md

@@ -39,6 +39,7 @@ Please make sure to keep this list up to date when adding and updating ports. :^
 | [`libffi`](libffi/) | libffi | 3.3 | https://www.sourceware.org/libffi/ |
 | [`libiconv`](libiconv/) | GNU libiconv | 1.16 | https://www.gnu.org/software/libiconv/ |
 | [`libjpeg`](libjpeg/) | libjpeg | 9d | https://ijg.org/ |
+| [`libogg`](libogg/) | libogg | 1.3.4 | https://github.com/xiph/ogg |
 | [`libpng`](libpng/) | libpng | 1.6.37 | https://libpng.org/ |
 | [`libpuffy`](libpuffy/) | libpuffy | 1.0 | https://github.com/ibara/libpuffy |
 | [`libtiff`](libtiff/) | libtiff | 4.2.0 | https://www.libtiff.org/ |

Ports/libogg/package.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env -S bash ../.port_include.sh
+port=libogg
+version=1.3.4
+useconfigure=true
+files="https://github.com/xiph/ogg/releases/download/v${version}/libogg-${version}.tar.gz libogg-${version}.tar.gz"
+workdir="libogg-${version}"

Ports/libogg/patches/configure.patch

@@ -0,0 +1,12 @@
+diff -ru libogg-1.3.4/config.sub libogg-1.3.4-patched/config.sub
+--- libogg-1.3.4/config.sub 2021-03-08 15:40:56.932153900 +0100
++++ libogg-1.3.4-patched/config.sub 2021-03-08 15:40:43.633856800 +0100
+@@ -1333,7 +1333,7 @@
+ # The portable systems comes first.
+ # Each alternative MUST end in a * to match a version number.
+ # sysv* is not here because it comes later, after sysvr4.
+- gnu* | bsd* | mach* | minix* | genix* | ultrix* | irix* \
++ gnu* | bsd* | mach* | minix* | genix* | ultrix* | serenity* | irix* \
+ | *vms* | esix* | aix* | cnk* | sunos | sunos[34]*\
+ | hpux* | unos* | osf* | luna* | dgux* | auroraux* | solaris* \
+ | sym* | kopensolaris* | plan9* \