Fix for particle texture influence bug causing undefined (nan) values: When using a texture with "Particles/Strands" coordinates that in turn has a "Lifetime" influence on the particles, the texture eval
accesses the particle lifetime/dietime data before it is actually defined! This is a design flaw, but to avoid corrupted data for now just initialize the lifetime/dietime values for particles in advance
before evaluating the texture.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@60989 954f8c5b-7b00-dc11-b283-0030488c597c