fix: memory leaks
fix: wrong include
fix: pass by reference
Change the used 4ti2 version to 1.3.1 (rather than 1.3.2) in order to avoid diffs during regression testing

chg: also separated 4ti2 dependent tests from almost all test lists
Complete build options for Pthread API: use AX_PTHREAD instead of AC_CHECK_LIB(pthread,pthread_create)

NOTE: this is due to https://github.com/Singular/Sources/issues/571
fix  bug 597
add test to testlist
Merge pull request #576 from mmklee/factory_fix

Factory fix
chg: added functions to deflate and inflate polys
chg: call alg_factor even in trivial cases to get normalized factors
chg: added test for #489
chg: generated res and stat for bug_tr489.tst
fix: remove content from resultant
chg: added a new function SteelTrager to compute the factorization of inseparable
polys over alg. function fields and of polys over alg. function fields given by inseparable min. polys
fix: revert substitution
chg: reminders to self
add: new test for charseries in char p
chg: replace CharSet by mcharset
add: test for charseries mod p