GMPLS update - 62: optimizing standard GMPLS computed-path entries

Optimized #standard #extended GMPLS #tunnel #computed-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 #computed-path-hop entries. The hard-linked #custom GMPLS #computed-path-hop entries provides #alternate custom #parameters which satisfies the same requirement.

#GMPLS update 62 ...
[commit 06d5c4c6f8cf822242d0cf2e77cfecd906c24eae] (https://github.com/nes-repo/NES-Open-Switch/commit/06d5c4c6f8cf822242d0cf2e77cfecd906c24eae)