messed file dependencies.

The mess becomes apparent when unduly simplifying to
'theory Atools imports Complex_Main'
(*theory Atools imports Descript Typefix begin ...WOULD BE REQUIRED,
but hangs -- this needs to be clarified as well*):
The simplified header + use/s "../ProgLang/term.sml" removed:
*** Error (line 127 of "/usr/local/isabisac/src/Tools/isac/Knowledge/Atools.thy"):
*** Value or constructor (vars) has not been declared
but now arrive at:
*** Error (line 26 of "/usr/local/isabisac/src/Tools/isac/ProgLang/term.sml"):
*** Value or constructor (indent) has not been declared
which is definitely a mess, because ProgLang/term.sml appeared
already earlier in Build_Isac.thy

 theory Foo_Know111 imports "../1language/Foo_Language" begin

 consts foo111 :: "'a"

        bar111 :: "'a"

 axioms code111 : "foo111 = bar111"

 ML {*

 (* there is an error when de-commenting *) 111

 *}

 end