fix: quote(not something)

Conflicts:
	Singular/grammar.cc
fix: crossref. for texinfo
fix: HAVE_TAIL_RING is set in kutil.h for all k*.cc
fix: disable interred for ring-cf
Added test for reesclos
add: reesclos.tst to ok_s.lst
avoid assume failure (attr_free -> s_internaldelete)
update from spielweise: primdec.lib, standard.lib
temp. disabled: reesclosure
chg: added new conversion for polys over Fq (requires FLINT at least 2.4)
chg: use for univariate factorization over Fq
chg: use FLINT instead of NTL in squarefree factorization
chg: first part of changes in facMul
chg: second part of changes to facMul.cc
chg: use FLINT to factorize polys over Fq in facFqBivar
chg: fixes to stay backward compatible
bug fix due to unset NTL characteristic
fix: converting the wrong poly to FLINT
chg: more concise functions for Kronecker substitution and reversion of the very same
fix: bug in computing bounds for factor recombination