swift: clear up space on CI for longer aarch64 build, until 5.7 is out in a couple months

.github/workflows/packages.yml

@@ -150,7 +150,7 @@ jobs:
 
     - name: Free additional disk space (if necessary)
       run: |
-        if grep -q '^rust$\|^rustc-nightly$\|^dart$' ./built_termux-main_packages.txt; then
+        if grep -q '^dart$\|^rust$\|^rustc-nightly$\|^swift$' ./built_termux-main_packages.txt; then
           echo "Free additional disk space on host"
           sudo apt purge -yq $(dpkg -l | grep '^ii' | awk '{ print $2 }' | grep -P '(cabal-|dotnet-|ghc-|libmono|php)') \
             liblldb-6.0 libllvm6.0:amd64 mono-runtime-common monodoc-manual powershell ruby

packages/swift/build.sh

@@ -11,9 +11,9 @@ TERMUX_PKG_DEPENDS="clang, libandroid-glob, libandroid-posix-semaphore, libandro
 TERMUX_PKG_BUILD_DEPENDS="rsync"
 TERMUX_PKG_BLACKLISTED_ARCHES="i686"
 TERMUX_PKG_NO_STATICSPLIT=true
-# Build of swift uses cmake, but the standard
-# termux_step_configure_cmake function is not used. Instead we set
-# TERMUX_PKG_FORCE_CMAKE to make the build system aware that cmake is
+# Building swift uses CMake, but the standard
+# termux_step_configure_cmake function is not used. Instead, we set
+# TERMUX_PKG_FORCE_CMAKE to make the build system aware that CMake is
 # needed.
 TERMUX_PKG_FORCE_CMAKE=true
 TERMUX_CMAKE_BUILD=Ninja