value: symlink rather then duplicate multicall binary

As done with einfo, rather then have many copies of the same executable,
that differ in only name, create a single copy and symlink all the
others.

Author: jsbronder

src/value/meson.build

@@ -1,15 +1,21 @@
 value_execs = [
-  'service_get_value',
   'service_set_value',
   'get_options',
   'save_options',
   ]
 
+executable('service_get_value',
+  ['value.c', misc_c, version_h],
+  include_directories: [incdir, einfo_incdir, rc_incdir],
+  link_with: [libeinfo, librc],
+  install: true,
+  install_dir: rc_bindir)
+
 foreach exec : value_execs
-  executable(exec,
-    ['value.c', misc_c, version_h],
-    include_directories: [incdir, einfo_incdir, rc_incdir],
-    link_with: [libeinfo, librc],
+  custom_target(exec,
+    output: exec,
+    command: ['ln', '-sf', 'service_get_value', '@OUTPUT@'],
+    build_always: true,
     install: true,
     install_dir: rc_bindir)
 endforeach