MapScript needs to run msSetup/msCleanup automagically

[sdlime]

This really applies to multiple components but I had to pick one, so MapScript-
SWIG gets it. This stems from the use of the GEOS C api which requires us to 
call a GEOSinit() and GEOSfinish() when using the library. You definitely want 
to do that only once when MapScript or the CGI are loaded. The MapServer C code 
already defines a couple of functions msSetup/msCleanup to do this. They are 
being used for some OGR cleanup and so on. These would be logical places for 
the GEOS functions. Besides that we need to:

  - add them to PHP's MSINIT and MSHUTDOWN functions
  - add them to language specific interface files for all relevant SWIG 
languages. Python is done (at least for msSetup), so Perl, Ruby, C# and Java 
need to be done.
  - add them to mapserv.c, being mindfull of fast CGI support

Steve

[dmorissette]

I'll add the calls to the PHP MINIT and MSHUTDOWN functions now.

[dmorissette]

Added the calls to PHP MINIT and MSHUTDOWN in 4.9-dev

[sgillies@…]

Did this for Python the other day.

[szekerest]

csmodule.i

[unicoletti]

Java mapscript indeed calls msSetup() on library loading, but msCleanup() not yet.
I'll do some checks to see how the latter can be achieved.

[sdlime]

Add perl extension interface files following Sean's python lead. msSetup() is
called, but not msCleanup(). Gotta figure out how...

Steve

[sgillies@…]

I think calling msCleanup automatically is low priority. I only did it for
Python just for the sake of completeness.

For Java and C#, maybe it would be best to require users to call msSetup()
explicitly at the start of their programs, and then call msCleanup() at the end. 

[sgillies@…]

reassigning

[sdlime]

I believe this is now complete... Closing.

Steve