Use more consistent and readable local variable names

src/saturnin.sh.skel

     # unless syntax check fails, execute it as Bash code (in separate
     # process).
     #
-    local hname="$1"    # hook name
-    local hook_code     # ... code
+    local name="$1"     # hook name
+    local code          # ... code
     test -n "$SATURNIN_SUBCOMMAND" || {
-        warn "unknown subcommand, ignoring hook: $hname"
+        warn "unknown subcommand, ignoring hook: $name"
         return 0
     }
-    hook_code="$(saturnin__conf -j "hook.$SATURNIN_SUBCOMMAND.$hname")"
-    debug -v SATURNIN_SUBCOMMAND hook_code hname
-    bash -n <<<"$hook_code" || {
-        warn "syntax errors, ignoring hook: $hname"
+    code="$(saturnin__conf -j "hook.$SATURNIN_SUBCOMMAND.$name")"
+    debug -v SATURNIN_SUBCOMMAND code name
+    bash -n <<<"$code" || {
+        warn "syntax errors, ignoring hook: $name"
         return 0
     }
-    eval "$hook_code"
+    eval "$code"
 }
 
 saturnin__runsc() {