Update recast/detour to revision 351
Reintroduce win 2010/2012 project file for detour/recast
Customise detour for CMaNGOS
Correct setting for new Detour navmesh generation
Change MMAP file version to avoid wrong version loaded
Fix compil, we don't use level in navmesh so simply assume we are working on level 0.
Fix a possible crash in some situation
Correctly handle new Detour return value format.

Thank to Faramir for pointing.
Use less value for slope and climb to make more realistic path generation and avoid creatures seem fly or blocked animation while climbing a too much high slope.

Thank for voldemort808 for pointing climb setting.
Add alternative to see help of movemapgen, correct some typo and update binary
Restore linux build
Add this feature branch to travis file
Add ".mmap path go" chat command and rename "true" option to more explicit "straight".
Update .travis.yml