added a test for empty char series
typo fix
Merge pull request #590 from surface-smoothers/fix.typo.hasFieldCoefficient

typo fix
ring.lib: header, examples
chg: make sqrf_norm_sub return non-sqrfree norm if wished
chg: do not waste non-sqrfree norm
chg: better docu and function naming
chg: move IntGenerator from facAlgFuncUtil to cf_generator
chg: added a function to compute the norm
chg: use a not necessarily squarefree norm in factorization over number fields
fix: bug in removeFactors
chg: improved normalize
chg: make sqrf not change the order of input
chg: use modCharSet without removal of contents instead of charSetViaModCharSet
chg: towards better ordering of qhi in irrCharSeries
chg: more normalization
chg: use charSetN in some cases
fix: bug in subst
chg: use only modCharSet instead of charSetViaModCharSet in factorization
chg: added example from Kroeker to charseries.tst
chg: updated test results
chg: updated more test results due to changes
chg: update result of primdec_l.tst