- support use of wmake -show-xyz, as well as older WM_CC, WM_CFLAGS etc.
- add support for Makefile.inc for scotch
- add -toolset= option for making boost and use b2 instead of legacy
bjam for configuration
ENH: add support of additional configure options to some make scripts
- remove hard-coded --verbs from makeOPENMPI in favour of letting the
user provide it via the command-line for makeOPENMPI.
eg, makeOPENMPI openmpi-1.10.6 -- --with-verbs=DIRECTORY ...