COMP: add wmake rules for Pgi compiler (#1234)

etc/bashrc

etc/config.csh/settings

etc/config.sh/settings

etc/cshrc

src/OSspecific/POSIX/POSIX.C

wmake/rules/General/Pgi/c

wmake/rules/General/Pgi/c++

wmake/rules/General/Pgi/openmp

wmake/rules/linux64Pgi/c

wmake/rules/linux64Pgi/c++

wmake/rules/linux64Pgi/c++Debug

wmake/rules/linux64Pgi/c++Opt

wmake/rules/linux64Pgi/c++Prof

wmake/rules/linux64Pgi/cDebug

wmake/rules/linux64Pgi/cOpt

wmake/rules/linux64Pgi/cProf

wmake/rules/linux64Pgi/general

wmake/rules/linux64Pgi/mplibOPENMPI