Fix sub-command environment

Paths are transferred by saturnin meta-command so there's no need
to build sub-command binaries

bin/saturnin.skel

@@ -1,7 +1,8 @@
 #!/bin/bash
 
 . <(ffoom init)
-export FFOO_INI_PATH="__SATURNIN_INI_PATH__:$SATURNIN_INI_PATH"
+export FFOO_INI_PATH="$SATURNIN_INI_PATH:__SATURNIN_INI_PATH__"
+export FFOO_PATH="__SATURNIN_FFOO_PATH__"
 saturnin_libexec="__SATURNIN_LIBEXEC__"
 
 ffoo import exit

libexec/saturnin-www.skel → libexec/saturnin-www

@@ -1,8 +1,6 @@
 #!/bin/bash
 
 . <(ffoom init)
-export FFOO_INI_PATH="__SATURNIN_INI_PATH__"   # needed for www.find_uri
-export FFOO_PATH="__SATURNIN_FFOO_PATH__"      # needed for www and xorg
 
 ffoo import ini
 ffoo import www