Version 1.19 released: _ProcessRunsAlready(), _ProcessInstances() and _FileComparePaths()

In Miscellaneous.au3 2 new functions:
_ProcessRunsAlready() returns if a process is already running when the same process is started again (singleton).
_ProcessInstances() gets number of instances of a process or processes.

In String and File String.au3 1 new function: _FileComparePaths() for comparing (url) paths.

2 bug repairs:
- for url's paths _FilePath() returned with forward slash
- _StringToArray() didn't always return all columns for a 2D row/column split

3 improved functions:
- _StringToArray(): added type conversion parameter to convert column according to format: c = string, b = boolean, n = number, d = binary
- _FilePath() : added a boolean parameter to return lower case path (for easy comparing paths)
- _ProcessGetProcessId(): process name may include path