Revision 78

Big patch, use it with care (tests done with GNU/Linux) :
 - Trivial warnings in encoder.c line 282 ret1 = ret 2 = 0;
 - Lot of "New line at end of file missing" warnings fixed (gcc3)
 - All 2d arrays have been turned into 1d arrays
   To force alignment of matrices on stack, use DECLARE_ALIGNED_MATRIX
   (read portab.h)

Win32 users should give feedback.