[pptp/f15] (4 commits) ...Build with warning-fix patches to address occasional segfaults (#749455)

[Paul Howarth]

Summary of changes:

  7c161db... Add new features from upstream CVS (*)
  d7cf927... Drop compiler optimization level to -O0 (*)
  a322d17... Attack compiler and rpmlint warnings (*)
  75cbf11... Build with warning-fix patches to address occasional segfau (*)

(*) This commit already existed in another branch; no separate mail sent