made sml/nj happy about Sledgehammer and Nitpick (cf. 6f11c9b1fb3e, 3c2438efe224)

Backed out changeset 6f11c9b1fb3e (breaks compilation of HOL image)

now if this doesn't make SML/NJ happy, nothing will

more stats;

renamed Variable.thm_context to Variable.global_thm_context to emphasize that this is not the real thing;

slightly more standard induct_simp_add/del attributes; provide explicit context for internal addsimps;

map_css: explicitly provide a temporary context, which might be required for mksimps, mkcongs etc.;

export Simplifier.with_context;

removed some old comments;

merged

merged

generalize lemma adjoint_unique; simplify some proofs

fix latex url

merged

define linear algebra concepts using scaleR instead of (op *s); generalized many lemmas, though a few theorems that used to work on type int^'n are a bit less general

remove unused function vector_power, unused lemma one_plus_of_nat_neq_0

move class instantiations from Euclidean_Space.thy to Finite_Cartesian_Product.thy

remove redundant constants pastecart, fstcart, sndcart; users should prefer Pair, fst, snd instead

generalize LIMSEQ_vector to tendsto_vector

generalize orthogonal_clauses

remove redundant lemma vector_dist_norm

remove redundant lemma norm_0

generalize some euclidean space lemmas

prove lemma openin_subopen without using choice

move path-related stuff into new theory file

add new Multivariate_Analysis files to IsaMakefile

move operator norm stuff to new theory file

eliminated spurious sledgehammer invocation;

merged

merged

merged

enclose case expression in brackets

catch the right exception

eliminate trivial case splits from Isar proofs

remove debugging code

merged

minor improvements

identify axioms/conjectures more reliably in ATP proofs (an empty dependency list doesn't always indicate an axiom or conjecture!)

added "no_atp" for theorems that are automatically used or included by Sledgehammer when appropriate (about combinators and fequal)

in "overlord" mode: ignore problem prefix specified in the .thy file

uncomment code

redid some Sledgehammer/Metis proofs

fix more "undeclared symbol" errors related to SPASS's DFG format

be more discriminate: some one-line Isar proofs are silly

one-step Isar proofs are not always pointless

the SPASS output syntax is more general than I thought -- such a pity that there's no documentation

redo more Metis/Sledgehammer example

fixed definition of "bad frees" so that it actually works

don't remove last line of proof

handle previously unknown SPASS syntaxes in Sledgehammer's proof reconstruction

make SML/NJ happy, take 2

use readable names in "debug" mode for type vars + don't pipe facts using "using" but rather give them directly to metis (works better with type variables)

expand combinators in Isar proofs constructed by Sledgehammer; this requires shuffling around a couple of functions previously defined in Refute

more neg_clausify proofs that get replaced by direct proofs

redo some of the metis proofs

back to Vampire 9 -- Vampire 11 sometimes outputs really weird proofs

improve unskolemization

make sure short theorem names are preferred to composite ones in Sledgehammer; this code used to work at some point

properly extract SPASS proof

try out Vampire 11 and parse its output correctly; will revert to Vampire 9 if 11 doesn't perform as well