[darwin] fix building from user set prefix path. move XBMC_DEPENDS_ROOT to xconfig and set it during configure
Merge pull request #4747 from davilla/autogen-xbmc-depends-root

[darwin] fix building from user set prefix path. move XBMC_DEPENDS_ROOT ...
make sure NPT_CONFIG_ENABLE_LOGGING is defined
platinum: remove patch file due to 90c1026eabc7ee25748bc897974118ccb305befd
[win32] update VS project files with NPT_CONFIG_ENABLE_LOGGING
platinum: overwrite defines for default HTTP "User-Agent" and "Server" header field values
[win32] platinum: overwrite defines for default HTTP "User-Agent" and "Server" header field values
[osx/ios/atv2] platinum: overwrite defines for default HTTP "User-Agent" and "Server" header field values