Add modified kvec for TERGM

[AdrienLeGuillou]

• changes with <R.h>
• replace calls to realloc and free to R_Realloc and R_Free

Contrary to KHash, no allocator macros are defined by default

related to https://github.com/statnet/tergm/pull/125

[krivit]

Hey, sorry take so long on this. Can I trouble you to use a development branch rather than master and make a PR from that? It makes it easier to test on my system.

[AdrienLeGuillou]

Hi, no worries. Do you mean making a dev branch on ergm and opening a PR from it to master? I am not allowed to create branches on this repo though.

[krivit]

The idea is to keep AdrienLeguillou/ergm@master identical to statnet/ergm@master at all times, and make a PR from AdrienLeguillou/ergm@kvec to statnet/ergm@master .

[krivit]

That way, I can check out your dev branch and make edits and comparisons as needed.

[AdrienLeGuillou]

got it