ppc64le: go compiled programs should statically link with libgo

When gccgo compiles binaries, it dynamically links those binaries with libgo.so. This requires that users have libgo.so installed.

MongoDB should compile binaries with static linking for libgo instead.

Example:

go build -gccgoflags '-static-libgo' -o bin/mongodump mongodump/main/mongodump.go