Add initial points files

This commit add new initial points files. Each one contains 100 initial points. Each file is related to a single CUTEr problem, hence filenames used. Here are the problems covered:
  - avion2
  - dallass
  - hs48
  - hs49
  - hs51
  - hs53
  - hs112
  - hs119
  - loadbal
  - propdl0