testing/mergerfs: fix --version and build without -g

Makefile sets mergerfs version based on git tag, but we're in aports
repository...

testing/mergerfs/APKBUILD

@@ -10,12 +10,18 @@ license="ISC"
 depends="libattr fuse"
 makedepends="autoconf automake libtool gettext-dev attr-dev fuse-dev linux-headers"
 subpackages="$pkgname-doc"
-source="$pkgname-$pkgver.tar.gz::https://github.com/trapexit/$pkgname/archive/$pkgver.tar.gz"
+source="$pkgname-$pkgver.tar.gz::https://github.com/trapexit/$pkgname/archive/$pkgver.tar.gz
+	makefile-no-debug.patch"
 builddir="$srcdir/$pkgname-$pkgver"
 
+prepare() {
+	default_prepare
+	echo "$pkgver" > "$builddir"/VERSION
+}
+
 build() {
 	cd "$builddir"
-	make OPTS="$CXXFLAGS"
+	make OPTS="$CXXFLAGS" GIT=
 }
 
 check() {
@@ -30,4 +36,5 @@ package() {
 	make PREFIX="/usr" DESTDIR="$pkgdir" install
 }
 
-sha512sums="1f2ecb162bd2aee390d5067a888f38c0b7137022f7447b93ff2b743d759b815408f6f09e68bcf240e5274d6c872b9a8c9cbe48b5e11538ae0af02713a4f66745  mergerfs-2.23.1.tar.gz"
+sha512sums="1f2ecb162bd2aee390d5067a888f38c0b7137022f7447b93ff2b743d759b815408f6f09e68bcf240e5274d6c872b9a8c9cbe48b5e11538ae0af02713a4f66745  mergerfs-2.23.1.tar.gz
+1836bbfc38d167d0107fdb1b29630625d4eec0ce3e505d48df1fcb8fc9122e55522535a7f45c9db51e9b66a43af7293eb9c684fd4faec5ced2ba2140c2615c5e  makefile-no-debug.patch"

testing/mergerfs/makefile-no-debug.patch

@@ -0,0 +1,11 @@
+--- a/Makefile
++++ b/Makefile
+@@ -51,7 +51,7 @@
+ TARGET      = mergerfs
+ MANPAGE     = $(TARGET).1
+ FUSE_CFLAGS = -D_FILE_OFFSET_BITS=64 -Ilibfuse/include
+-CFLAGS      = -g -Wall \
++CFLAGS      = -Wall \
+ 	      $(OPTS) \
+ 	      -Wno-unused-result \
+               $(FUSE_CFLAGS) \