CAPU v0.17.0

Thanks for contributions from (in order of patches)
Felix Zinkel
Alexander Irion
Johannes Baeuerle
Jonathan Conrad
Violin Yanev
Peter Pedron
Martin Veith

API breach

(none)

Bug Fixes

Wrong file flags in posix file handling fixed
Fix crash when requesting substring of length 0
Fixed uninitialized variable warning from Travis CI in a socket test

Features

Working directory manipulation
LogAppender available for logging via dlt (http://projects.genivi.org/diagnostic-log-trace/home)
String::replace function

Tests

Rudimentary test for log context's userdata
HashSet iterator removal tests

Refactoring

LogContext can now user specific data for implementation specifics
Rename ntoh 64 bit version which conflicted in newer OSX versions
Improve compiler flags for MacOSX