User set pythonhome env variable interferes with GDB

Issue

• User sets PYTHONHOME in their environment to point at a non standard python location.
  • User needs different libraries than what come with the default python install such as math and physics libraries.
• User attempts to run gdb, it fails to run and is not obvious as to why.

> gdb hello
gdb: symbol lookup error: gdb: undefined symbol:
PyUnicodeUCS4_FromEncodedObject