enable_mixed_bcp Tunable

The enable_mixed_bcp tunable might no longer be supported in a future release. In the Solaris 8 operating environment the /etc/system variable enable_mixed_bcp can be set to 0 to disable dynamic linking of partially statically linked SunOS 4.0 and compatible executables. The system uses dynamic linking for these executables by default. In a future release, dynamic linking may always be used for these executables, and the enable_mixed_bcp tunable may be removed from the system. This change would not affect binary compatibility for SunOS 4.0 and compatible executables in any way.