chg: due to removal of old factorization code
chg: disable unused variants of functions
chg: disable some matrix nonsense
chg: remove no more need fac_multivar.h from include
fix slocus bug 526(trac)
Merge pull request #474 from surface-smoothers/fix-slocus.proposal

fix slocus bug for zero ideal (see Singular-track 526)
add optionIsSet proposal
added check if an option is valid to optionIsSet
Merge pull request #457 from surface-smoothers/checkOption

proposal for checking if a certain option is set or not
 fix: cond for regularity (syResolvente): ring_cf case
fix bug in isQuotientRing test
fix: transz.ext -> alg.ext mapping
Bug #540 was fixed by deactivating OPT_SB_1 (test(29)) when the coefficient ring a ring is
fix: syntax
Merge pull request #488 from surface-smoothers/fix-slocus.proposal

fix bug in isQuotientRing test
Forgot some debug outputs
fix: tests for imap: trans.->alg.
Merge pull request #489 from adipopescu/QuotientBugFix

Quotient bug fix
Merge pull request #487 from mmklee/factory_flint24_sw

Factory flint24 sw
fix: quotient for ring_cf: test is a function call
fix: tests for absfact.lib