Update build-instructions add wiki links
* build-installer-de.htm4, build-installer.htm4: Remove MSI doc, remove link to hoplelessly outdated VM doc. * build-installer-on-vm-de.htm4, build-installer-on-vm.htm4: Add deprecation warning. Link to wiki. * build-installer-gnulinux-de.htm4: Update for wheezy / git. * build-installer-gnulinux.htm4: Update for wheezy.
Imo all these pages and the GnuPG wiki build instructions should
just say: Read the README in the sources. Which is where
this information is acutally maintained.