It looks like PyOpenCL obsoleted the enqueue_read_buffer method, and
enqueue_copy should be used instead. Even though enqueue_copy already exists
with the earliest version of PyOpenCL I looked at, I wrote it in a
backwards-compatible way so that it doesn't break in case I missed something.
Tested on OSX in frozen mode, but it should be platform-independent.
- 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
