(1) Rename variable "USE_X11" to "USE_X_PREFIX" to make clearer what it     means (change PREFIX to ${X11BASE}) and add a new variable USE_X11     which means "this port requires the X window system (actually the     library)".  USE_X_PREFIX implies USE_X11.  USE_X11 adds a     LIB_DEPENDS to libX11 with the x11/XFree86 port. Reviewed by:	the ports list, hoek in particular
(1) Rename variable "USE_X11" to "USE_X_PREFIX" to make clearer what it
    means (change PREFIX to ${X11BASE}) and add a new variable USE_X11
    which means "this port requires the X window system (actually the
    library)".  USE_X_PREFIX implies USE_X11.  USE_X11 adds a
    LIB_DEPENDS to libX11 with the x11/XFree86 port.
Reviewed by:	the ports list, hoek in particular

(2) Remove NO_CONFIGURE and NO_PATCH, which never meant anything.
    Yell if they are defined.
Reviewed by:	the ports list

(3) Add new variable OSREL, which is automatically set to the
    numeric OS version (e.g., 2.2.1, 3.0).  It can be used to refer to
    files in gcc installations, for instance.

(4) Finally remove EXEC_DEPENDS hack after all these years.
Submitted by:	hoek

(5) Put quotes around some echo ${*_DEPENDS} statements so they won't
    blow up when the variables include regular expressions like
    "qt\\.1\\.\\\(33\\\|40\\\):${PORTSDIR}/x11/qt140".

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase