commitmonitor Code

(Fixes issue #200) : CommitMonitor fails to store repository information when a large amount of log information is retrieved
* drop the limit of 100kB for strings when serializing
* use a wchar_t static buffer for smaller wide char strings

Add methods to serialize a byte buffer.
This is required to solve issue #5.

Indicate the GPL license.

Use a memory mapped file for loading the url infos.

Don't use a static buffer, it's not thread safe.

Improve memory allocation handling.

Use buffered file read/write.

Add missing files.