-Add a slider for cl_prednudge in the Network Options menu.
-Allow menu sliders to decrement if the step value is negative.

git-svn-id: http://odamex.net/svn/root/trunk@3767 b0bcef46-2027-0410-bd56-ab726e9a1d04
Don't broadcast a namechange message if the player is simply changing the case of their name.

git-svn-id: http://odamex.net/svn/root/trunk@3768 b0bcef46-2027-0410-bd56-ab726e9a1d04
Change StdStringCompare() to iequals().

- StdStringCompare() with a case-sensitive comparison offers nothing over std::string::compare(), so the only real use it has is for case-insensitive comparison.
- iequals() is already the standard name for a boost case-insensitive comparison function, so it's an obvious choice for a new name.

git-svn-id: http://odamex.net/svn/root/trunk@3769 b0bcef46-2027-0410-bd56-ab726e9a1d04