GMPLS update - 56: optimizing standard GMPLS actual-path entries

Optimized #standard #extended GMPLS #tunnel #actual-path #entries in GMPLS module. This removes the #extended #path-hop #attributes like flags indicating whether #hop-forward-label and #hop-reverse-label are present or not, the #labels them selves and the #pointers to the external labels. This will reduce the memory requirement associated with the #GMPLS #actual-path-hop entries. The hard-linked #custom GMPLS #actual-path-hop entries provides #alternate custom #parameters which satisfies the same requirement.

#GMPLS update 56 ...
[commit c6535beee559512359feea3d58fa18536f0ff86d] (https://github.com/nes-repo/NES-Open-Switch/commit/c6535beee559512359feea3d58fa18536f0ff86d)