Move FILE * operations behind new gp_file * API.

(squash of commits from filesec branch)

Most of this commit is donkeywork conversions of calls from
FILE * -> gp_file *, fwrite -> gp_fwrite etc. Pretty much every
device is touched, along with the clist and parsing code.

The more interesting changes are within gp.h (where the actual
new API is defined), gpmisc.c (where the basic implementations
live), and the platform specific levels (gp_mswin.c, gp_unifs.c
etc where the platform specific implementations have been
tweaked/renamed).

File opening path validation

All file opening routines now call a central routine for
path validation.

This then consults new entries in gs_lib_ctx to see if validation
is enabled or not. If so, it validates the paths by seeing if
they match.

Simple C level functions for adding/removing/clearing paths, exposed
through the gsapi level.

Add 2 postscript operators for path control.

  <name> <string> .addcontrolpath -

    Add the given <string> (path) to the list of paths for
    controlset <name>, where <name> can be:
      /PermitFileReading
      /PermitFileWriting
      /PermitFileControl
      (Anything else -> rangecheck)

  - .activatepathcontrol -

    Enable path control. At this point PS cannot make any
    more changes, and all file access is checked.

1 files changed, 1 insertions, 1 deletions

diff --git a/devices/gdevjpeg.c b/devices/gdevjpeg.c
index 7ce6aac74..229e6ccb3 100644
--- a/devices/gdevjpeg.c
+++ b/devices/gdevjpeg.c
@@ -414,7 +414,7 @@ jpeg_get_initial_matrix(gx_device *dev, gs_matrix *pmat)
 
 /* Send the page to the file. */
 static int
-jpeg_print_page(gx_device_printer * pdev, FILE * prn_stream)
+jpeg_print_page(gx_device_printer * pdev, gp_file * prn_stream)
 {
     gx_device_jpeg *jdev = (gx_device_jpeg *) pdev;
     gs_memory_t *mem = pdev->memory;