community/rawtherapee: upgrade to 5.4-rc2

Fix upstream issue #4412

Don't use the sources from GH:
https://github.com/Beep6581/RawTherapee/blob/dev/RELEASE_NOTES.txt#L34

Enable debug subpkg

community/rawtherapee/APKBUILD

 # Contributor: ScrumpyJack <scrumpyjack@st.ilet.to>
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=rawtherapee
-pkgver=5.3
+pkgver=5.4_rc2
+_pkgver=${pkgver/_/-}
 pkgrel=0
-_gtkver=2
 pkgdesc="RawTherapee is image processing software simular to Lightroom or Aperture"
 url="http://rawtherapee.com"
 arch="x86 x86_64 ppc64le"
@@ -12,10 +12,10 @@ makedepends="bzip2-dev exiv2-dev expat-dev fftw-dev glib-dev gtk+3.0-dev \
              gtk-engines-dev gtkmm3-dev lcms2-dev libcanberra-dev \
              libpng-dev libsigc++-dev tiff-dev zlib-dev cmake mercurial \
              libiptcdata-dev libjpeg-turbo-dev lensfun-dev"
-options="!check"
-subpackages="$pkgname-doc"
-source="$pkgname-$pkgver.tar.gz::https://github.com/Beep6581/RawTherapee/archive/$pkgver.tar.gz"
-builddir="$srcdir"/RawTherapee-$pkgver
+options="!check !strip"
+subpackages="$pkgname-doc $pkgname-dbg"
+source="$pkgname-$pkgver.tar.xz::http://rawtherapee.com/shared/source/rawtherapee-$_pkgver.tar.xz"
+builddir="$srcdir"/$pkgname-$_pkgver
 
 build() {
 	mkdir -p "$builddir"/build
@@ -31,4 +31,4 @@ package() {
         make DESTDIR="$pkgdir" install
 }
 
-sha512sums="56e0b24faacf492a0089137ad422a366fa789aae402b943ae6cb8c467a5dbc042ef1b981f09c08004ae71f7c4a29e94c0f4b1b8c8b6b44108790f24987d2d0ca  rawtherapee-5.3.tar.gz"
+sha512sums="c858b7ec17a44579d6da0e000d114377346f3ba4f2d473ff3f0a80b40cf1ddc545ce47c250c2b2e58dae1e8a0cc4f8e2548aa9969b29087267684e3044b3fcc5  rawtherapee-5.4_rc2.tar.xz"