cygserver and its relation to the "Bad system call" error.
* faq-setup.xml (faq.setup.uninstall-all): Mention postgresql.
* overview2.sgml: Update security info on shared memory.
list of packages required for building and exact check instructions.
* faq-setup.xml (faq.setup.uninstall-service): New instructions
on uninstalling a cygwin service.
(faq.setup.uninstall-all): Reference new service uninstall FAQ.