qt: Add Qt 5.15.2 package and build scripts

Qt but missing some modules that wouldn't build, such as qtwebengine.

qt: Update Qt 5.15.2 and build scripts

Mostly the same package, but fixes numerous bugs with the previous:
missing xcb and related libraries, rpaths of binaries don't link to
each other, directory names are now usable in yuzu.

icu/build_icu.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# This script is meant to make it easy to rebuild packages using the
+# linux-fresh yuzu-emu container.
+
+# Run this from within the source directory
+
+THIS=$(readlink -e $0)
+USER_ID=${1}
+GROUP_ID=${2}
+VERSION=5_15_2
+BASE_NAME=$(readlink -e $(pwd) | sed 's/.*\///g')
+ARCHIVE_NAME=${BASE_NAME}_${VERSION}.tar.xz
+NUM_CORES=$(nproc)
+
+
+mkdir build || true
+cd build
+mkdir out || true
+../configure
+make -j${NUM_CORES} install DESTDIR=out
+

icu/start_build.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# Kicks off the build script using the linux-fresh build container.
+
+if [ "$#" -ne 2 ]; then
+    echo "usage: $0 <Source directory> <Build script>"
+    exit
+fi
+UID=`id -u`
+GID=`id -g`
+
+SRC_DIR=$(readlink -e $1)
+SRC_DIR_BASENAME=$(basename ${SRC_DIR})
+SCRIPT=$(readlink -e $2)
+SCRIPT_BASENAME=$(basename ${SCRIPT})
+
+cp ${SCRIPT} ${SRC_DIR}
+docker run -v ${SRC_DIR}:/${SRC_DIR_BASENAME} -w /${SRC_DIR_BASENAME} -u root -t yuzuemu/build-environments:linux-fresh /bin/bash /${SRC_DIR_BASENAME}/${SCRIPT_BASENAME} ${UID} ${GID}
+exit
+SRC_DIR=${SRC_DIR}/qtwebengine
+docker run -v ${SRC_DIR}:/${SRC_DIR_BASENAME} -w /${SRC_DIR_BASENAME} -u root -t yuzuemu/build-environments:linux-fresh /bin/bash /${SRC_DIR_BASENAME}/${SCRIPT_BASENAME} ${UID} ${GID}
+