Removed kschur.py
remove import kschur from classical.py and inaccessible if statements
remove stray import statement from algebras/nil_coxeter_algebra.py
Merge branch 'public/combinat/sf/fixes-15575' of trac.sagemath.org:sage into 15575
salvaging the doc from kschur.py
correcting my own errors
removing a bad idea I blindly copied from the old docstrings
additions to documentation
fixes to new_kschur documentation
clarification on meaning of lift
removed kSchurFunctions_t from the pickle jar
Merge remote-tracking branch 'origin/develop' into HEAD
Clean up cliquer package
Remove support for SAGE_FORTRAN
first try for trac issue #15686:
Improve documentation of constraint_generation in MixedIntegerLinearProgramming
second try for trac issue #15686
Speed up MPC multiplication
Added doctests to matrix_space.py.
third try for trac issue #15686
Added special case of q_int(0).