iputils: Fix version reporting

The iputils build system embeds git tags into the generated binaries
for use by commands like ping -V.  Since openwrt packaging is done in
a different repository from the upstream repo, the tags it finds
aren't particularly meaningful, and we get confusing results like
those described at https://github.com/openwrt/packages/issues/13920

This change removes the git tag inspection in favor of the static
version string that's already known to the upstream build system.

Signed-off-by: Noah Meyerhans <frodo@morgul.net>

net/iputils/patches/001_version_fix.patch

@@ -0,0 +1,24 @@
+Description: set a static version string rather than discern it from git
+--- a/meson.build
++++ b/meson.build
+@@ -17,6 +17,7 @@ add_project_arguments(
+ 
+ conf = configuration_data()
+ conf.set_quoted('PACKAGE_NAME', meson.project_name())
++conf.set('VCS_TAG', meson.project_version())
+ conf.set('_GNU_SOURCE', 1, description : 'Enable GNU extensions on systems that have them.')
+ 
+ build_arping = get_option('BUILD_ARPING')
+@@ -207,10 +208,10 @@ foreach h : [
+ 	endif
+ endforeach
+ 
+-git_version_h = vcs_tag(
++git_version_h = configure_file(
+ 	input : 'git-version.h.meson',
+ 	output : 'git-version.h',
+-	fallback : meson.project_version()
++	configuration: conf
+ )
+ 
+ config_h = configure_file(