Update Linearize tool to support Windows paths; fix variable scope; update README and example configuration

[veqtrus]

Windows uses backslashes () in paths. An option has been added to allow setting which type of slash to be used. By default the forward slash (/) is used. Also updated the example configuration with the respective option.

I added 'self.' in front of a few variables since without it the script didn't work for me.

Minor fixes for README.

[jgarzik]

seems reasonable

[laanwj]

Python has excellent path manipulation utilities. Instead of making the path character configurable, why not use Python's path.join?

[jonasschnelli]

slightly tested ACK (not on windows).
Would recommend to squash to purge out the reverts and the non-path.join way.

[laanwj]

I'm not sure making inLen an instance variable is the right solution to the problem.
Only one function outside run(), writeBlock(), uses self.inLen, which is never defined, but the on-disk size can be easily computed in the function itself with:

def writeBlock(self, inhdr, blk_hdr, rawblock):
    blockSizeOnDisk = len(inhdr) + len(blk_hdr) + len(rawblock)
    if not self.fileOutput and ((self.outsz + blockSizeOnDisk) > self.maxOutSz):

[laanwj]

ACK after squashing commits into one