Log message:
MASTER_SITES -> MASTER_SITE_SOURCEFORGE; part 2/4. Let me know if this
breaks anything. Minor formatting and HOMEPAGE fixes in some files.

Log message:
Drop superfluous PKG_DESTDIR_SUPPORT, "user-destdir" is default these days.
Mark packages that don't or might probably not have staged installation.

Log message:
Import xmds-1.6.6 as wip/xmds.

eXtensible multi-dimensional Simulator
    * An open-source XML based simulation package
    * From Ordinary Differential Equations (ODEs) up to stochastic Partial
      Differential Equations (PDEs)
    * Many applications:
          o physics
          o mathematics
          o engineering
          o finance
          o economics
          o chemistry
          o theoretical biology
    * Generates fast, C++ compiled code
    * Documentation and source are free!
    * Runs on Linux, Unix, MacOS X and Cygwin (Windows)
XMDS is a code generator that integrates equations. You write them down in
human readable form in an XML file, and it goes away and writes and compiles a
C++ program that integrates those equations as fast as it can possibly be done
in your architecture.