chg: farey description
renamed in ring.lib: hasRingCoeffcientRing -> hasFieldCoeffcient
mv: factory/libfac/charset/alg_factor.* -> factory/facAlgFunc.*
chg: changes to libfac Makefile and include due to moving alg_factor.*
chg: changes to factory build system due to moving alg_factor
chg: moved helper functions for facAlgFunc from libfac to facAlgFunc
added: rewritten char sets
chg: author information for facAlgFunc
fix: some bug in modCharSet and in alg_gcd
fix: missing header
chg: switch on factorization over alg. func. fields
chg: make irrCharseries public
chg: move reorder stuff from libfac to factory
chg: improve code readibility
chg: deleted unused function and correct inclusion order
fix: includes
fix: need the removed factors
chg: added removeContent
chg: make removal of contents optional
fix: really remove content
chg: added Premb and improved normalize
chg: only use the squarefree parts when computing charsets