switch off boost auto-linking when building with multi-threading; this helps on windows
switch off boost auto-linking when building with multi-threading; this helps on windows

jandom/rdkit,rvianello/rdkit,soerendip42/rdkit,ptosco/rdkit,ptosco/rdkit,ptosco/rdkit,jandom/rdkit,greglandrum/rdkit,rvianello/rdkit,soerendip42/rdkit,ptosco/rdkit,strets123/rdkit,adalke/rdkit,greglandrum/rdkit,bp-kelley/rdkit,adalke/rdkit,rdkit/rdkit,greglandrum/rdkit,adalke/rdkit,jandom/rdkit,adalke/rdkit,bp-kelley/rdkit,ptosco/rdkit,jandom/rdkit,rvianello/rdkit,adalke/rdkit,strets123/rdkit,rdkit/rdkit,jandom/rdkit,ptosco/rdkit,adalke/rdkit,jandom/rdkit,ptosco/rdkit,bp-kelley/rdkit,soerendip42/rdkit,strets123/rdkit,greglandrum/rdkit,rdkit/rdkit,rdkit/rdkit,jandom/rdkit,rvianello/rdkit,strets123/rdkit,rvianello/rdkit,rdkit/rdkit,soerendip42/rdkit,strets123/rdkit,bp-kelley/rdkit,bp-kelley/rdkit,soerendip42/rdkit,rvianello/rdkit,rvianello/rdkit,greglandrum/rdkit,bp-kelley/rdkit,soerendip42/rdkit,soerendip42/rdkit,adalke/rdkit,strets123/rdkit,rdkit/rdkit,jandom/rdkit,rvianello/rdkit,rdkit/rdkit,greglandrum/rdkit,bp-kelley/rdkit,greglandrum/rdkit,adalke/rdkit,rdkit/rdkit,strets123/rdkit,soerendip42/rdkit,ptosco/rdkit,bp-kelley/rdkit,greglandrum/rdkit,strets123/rdkit