- immediately return from initCL() if numpy or pyopencl is unevailable
(no ImportError because of resetPoW() call)
- use glob to find C extension even if it named like
`bitmsghash.x86_64-linux-gnu.so`
If user chooses to show the Settings dialog:
- activate the "Network Settings" tab
- remove option 'dontconnect' if settings have been saved
- fixes errors introduced in the earlier refactoring
- more variables moved to state.py
- path finding functions moved to paths.py
- remembers IPv6 network unreachable (in the future can be used to skip
IPv6 for a while)
- got rid of shared config parser and made it into a singleton
- refactored safeConfigGetBoolean as a method of the config singleton
- refactored safeConfigGet as a method of the config singleton
- moved softwareVersion from shared.py into version.py
- moved some global variables from shared.py into state.py
- moved some protocol-specific functions from shared.py into protocol.py
- when you have multiple OpenCL drivers at the same time, e.g. intel and
nvidia, they won't mix leading to crashes. This patch makes it
possible to select which driver to use by listing the available
vendors
