Replace new/delete with JALLOC_HELPER_{MALLOC,FREE}.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2767 ba6dc0ae-232f-0410-883f-9ebac64fc565
Sock: Replace setsockopt with _real_setsockopt.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2768 ba6dc0ae-232f-0410-883f-9ebac64fc565
Remove unneeded include file form jalib/stlwrappers.h

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2769 ba6dc0ae-232f-0410-883f-9ebac64fc565
Added JAlloc class containing defs of new/delete.

- All DMTCP internal classes should inherit this base class to
  automatically get the definitions of new/delete, etc..

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2770 ba6dc0ae-232f-0410-883f-9ebac64fc565