Created Issue: [pykd-0.2.x] problem with getting export symbols [11654]

1. getting module instance
m = module("module_without_pdb")
print m

Module: module_without_pdb
Start: 77380000 End: 77529000 Size: 1a9000
Image: module_without_pdb.dll
Symbols: export symbols
Timestamp: 4ec4aa8e
Check Sum: 1ac7ee

2. create the second instance of the module:
m = module("module_without_pdb")
print m

Module: module_without_pdb
Start: 77380000 End: 77529000 Size: 1a9000
Image: module_without_pdb.dll
Symbols: <---- no symbols!!!
Timestamp: 4ec4aa8e
Check Sum: 1ac7ee