fix(main/fish): rename tarball version file to avoid conflict with ND…

…K internal version file

Progress on termux#21130

This seems to be a completely independent issue from other issues
because it is reproducible in a clean repo using this command:
```
scripts/run-docker.sh ./build-package.sh -I fish
```

I also tried temporarily unapplying the line
`grep -lrw $_TERMUX_TOOLCHAIN_TMPDIR/sysroot/usr/include/c++/v1 -e '<version>' | xargs -n 1 sed -i 's/<version>/\"version\"/g'`
from the end of `termux_setup_toolchain_27b.sh` and deleting the `~/.termux-build/_cache` in case it made any difference,
but at least in my test, it does not seem to make a difference on the fish package (whether or not `#include "version"` or `include <version>` is forced in the toolchain)
so, it seems like the `fish` package itself has to be patched.

packages/fish/build.sh

@@ -3,7 +3,7 @@ TERMUX_PKG_DESCRIPTION="The user-friendly command line shell"
 TERMUX_PKG_LICENSE="GPL-2.0"
 TERMUX_PKG_MAINTAINER="@termux"
 TERMUX_PKG_VERSION="3.7.1"
-TERMUX_PKG_REVISION=1
+TERMUX_PKG_REVISION=2
 TERMUX_PKG_SRCURL=https://github.com/fish-shell/fish-shell/releases/download/$TERMUX_PKG_VERSION/fish-${TERMUX_PKG_VERSION}.tar.xz
 TERMUX_PKG_SHA256=614c9f5643cd0799df391395fa6bbc3649427bb839722ce3b114d3bbc1a3b250
 TERMUX_PKG_AUTO_UPDATE=true
@@ -16,6 +16,23 @@ TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
 "
 
 termux_step_pre_configure() {
+	# fish releases tarballs that conflict with the way the toolchain
+	# currently is by putting a file in the tarball
+	# named "version" (not visible directly in the source code on github,
+	# generated by this code in fish's release workflow:
+	# https://github.com/fish-shell/fish-shell/blob/master/build_tools/make_tarball.sh#L69 )
+	# and, crucially, also placing the folder containing that file named "version"
+	# in the include path of building fish (since right next to this in the same folder,
+	# fish does have a file named "config.h" that it uses)
+	# here is the upstream, conflicting instance of file in internal llvm
+	# include path named "version" that is probably what propogates into the NDK's
+	# equivalent file,
+	# /home/builder/.termux-build/_cache/android-r27b-api-24-v1/sysroot/usr/include/c++/v1/version
+	# https://github.com/llvm/llvm-project/blob/main/libcxx/include/version
+	mv version fish_version
+	find build_tools -type f -exec sed -i {} \
+		-e 's/cat version/cat fish_version/g' \
+		-e 's/test -f version/test -f fish_version/g' \;
 	CXXFLAGS+=" $CPPFLAGS"
 }