Calling `pywrap` on the Python3 `inspect` module hangs (Linux)

I get a hang/lockup when I try to `pywrap` the `inspect` python library when using Python3.4. CPU is pegged at 100% on a single core. There is no problem when using Python2.7. I had a friend replicate this under a fresh vagrant install, and then also had a hang under Python3.4 but not Python 2.7 (in their case, running Julia 0.3.x).

I assume this has something to do with the internal use of the 'inspect' module within PyCall, but i'm not certain.

CC: @porterjamesj

Details below; the hang is on the last line. I would expect instead that "**anon**" (a module) would be returned.

```
julia> versioninfo()
Julia Version 0.4.3
Commit a2f713d (2016-01-12 21:37 UTC)
Platform Info:
System: Linux (x86_64-unknown-linux-gnu)
CPU: Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz
WORD_SIZE: 64
BLAS: libopenblas (USE64BITINT DYNAMIC_ARCH NO_AFFINITY Sandybridge)
LAPACK: libopenblas64_
LIBM: libopenlibm
LLVM: libLLVM-3.3

julia> versioninfo()
Julia Version 0.4.3
Commit a2f713d (2016-01-12 21:37 UTC)
Platform Info:
System: Linux (x86_64-unknown-linux-gnu)
CPU: Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz
WORD_SIZE: 64
BLAS: libopenblas (USE64BITINT DYNAMIC_ARCH NO_AFFINITY Sandybridge)
LAPACK: libopenblas64_
LIBM: libopenlibm
LLVM: libLLVM-3.3

julia> Pkg.status("PyCall")
- PyCall 1.4.0

julia> ENV["PYTHON"] = "/usr/bin/python3.4"
"/usr/bin/python3.4"

julia> Pkg.build("PyCall")
INFO: Building PyCall
INFO: PyCall is using /usr/bin/python3.4 (Python 3.4.2) at /usr/bin/python3.4, libpython = libpython3.4m

julia> using PyCall
INFO: Recompiling stale cache file /home/bnewbold/.julia/lib/v0.4/PyCall.ji for module PyCall.

julia> pywrap(pyimport("os"))
__anon__

julia> pywrap(pyimport("math"))
__anon__

julia> pywrap(pyimport("inspect"))
```