RandomLib 2011-04 released

The code has been moved on subversion on sourceforge and
the build procedures have been reorganized. The code
remains largely the same.

• Use cmake for configuration.
• Improve documentation on installation process.
• Improve documentation of parallelization.
• Remove examples RandomPermutation and shuffle and add
  RandomCoverage, RandomExact, RandomLambda, RandomSave,
  and RandomThread.
• Add specialized swap.
• Ensure the code works with compilers with no long double
  type.
• Add new and delete operators for SFMT19937 under Visual
  Studio.