fix: tr. #496 (imap:Q(a)->Q[a] via p_PermPoly)
chg: comments for ro_* enum
add: classifyci.lib
add: concat for intmat, bigintmat
fix: compiler warnings
chg: got rid of Farey in chinrem_gcd
various changes/fixes to documentation
chg: earlier switching to dense gcd
chg: arrange variables by deg if their leading coeff has the same size
fix: error when compiling with --enable-timing
chg: leave Lucks sparse lifting earlier if input is too dense
chg: order of multiplicands if their sizes differ
chg: cut off for Karatsuba
chg: added some timing infos
chg: order of multiplicands
chg: updated test results and stats of fermat_gcd_mod_*var
chg: added more tests to factorizeQ_l
chg: check for FLINT in default places by default
fix: strange libtool behaviour under Ubuntu
chg: version number: 4-0-0
fix: help for dynamic modules/proc

mainly from master
fix: classifyci::Semiground must not be static