add easyconfig file for GTI, MUST, PnMPI
add GTI patch file
change toolchain for GTI, MUST and PnMPI to gompi/1.4.12-no-OFED, minor style fixes
add CMake as build dep for PnMPI
add CMake as build dep for GTI
add CMake as build dep for GTI
Merge pull request #511 from boegel/unite_GTI_PnMPI_MUST

add easyconfigs file for GTI, MUST, PnMPI