Add Kcrash as a new package
* README: Update some notes. * configure.ac, packages/gen-frameworks.sh, packages/packages.current, src/Makefile.am, src/config.nsi.in, src/inst-sections.nsi: Add kcrash. * src/inst-kcrash.nsi, src/uninst-kcrash.nsi: New.
Kleopatra has a dependency on this. While it might not
be useful for us yet maybe we can make it more useful
in the future. It's very simple to package.