windows port: use __CYGWIN__ instead of ix86_Win
windows port: more __CYGWIN__
windows port: help via cygstart
windows port: removed dead code
windows port: fixed help
windows port: removed htmlhelp, sing_win.*
Switched off all debuging features in the lib
fix: tr. #649 (charset)
windows port: removed res('C'): singular.chm
fix: cleanup of system" format, Werror usage, sorting
doc: singular versions
fix: typo
version stuff: use SINGULAR_VERSION
version stuff: use SINGULAR_VERSION
doc: NEWS: ring_cf-attribute
fix: typo
fix: typo
fix: tr.#650 (check for attrib-isSB)