fix isQuotientRing for cases that parameter ring and basering are not the same
bugfix for isSubset, see track ticket 551
handling nonredundant primary decompositions in primDecsAreEquivalent-test
updated documentation of primDecsAreEquivalent
chg: more changes to docu
chg: ignore preprocessor statements and use first sentence as brief description
chg: even more changes to docu
chg: moved old/unused code into folder old
chg: added brief descriptions to some files
fix: factory's own doxygen settings
chg: disable old way to create doxygen
Merge pull request #607 from mmklee/dox

More / better Doxygen descriptions + cleanup & update
Added and referenced the old Singular C/C++ Coding Style guide

NOTE: the style guide (v1.0, May 27 2010) was originally contributed by Frank Seelisch
Doxygen should also look for markdown files (*.md) as well as C_CPP_StyleGuide.md
Renamed README into README.md + include it into doxygen manual
Use README.md as mainpage for Doxygen manual

NOTE: former mainpage is now main_page
fix: debug version must have no output if everything is okay!
chg: fixed wrong warning, better comment: try_omit_comp
Albert Heinle: new ncfactor.lib
fix: assign def,def=matrix