Fix compilation warnings of CHwSMTP

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Fix compilation warnings of MyGraph.cpp

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Fix compilation warnings of GitRev.cpp

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
This is git, not subversion

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Update build instructions

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Fix assertion / 0000000 is used if revision is reference instead of hash

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
In Repository Browser, press enter will go into selected folder or open the selected file instead of closing Repository Browser

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>