* Makefile.am: listed tools first in SUBDIRS, so xgettext can grab
the autogenned files

* acconfig.h: removed unused HAVE_XSHM_H

* tools/pdbgen/app.pl: added proc invoke method, nicer header
formatting

* tools/pdbgen/pdb/layer.pdb: use layer_mask type for return value
for layer_create_mask

* tools/pdbgen/pdb/misc.pdb: added quit proc

* tools/pdbgen/pdb/tools.pdb: added ink proc, but not added to @procs
since it's incomplete

* tools/pdbgen/pdb/fileops.pdb: new file

* app/Makefile.am: added fileops_cmds.c

* app/app_procs.c
* app/fileops.c
* app/ink.c: removed PDB procs (the one in ink.c was incomplete)

* app/fileops.h: exported load_procs, save_procs, and file_proc_find()

* app/plug_in.h: exported enum, #include <sys/types.h>

* app/brushes_cmds.c
* app/fileops_cmds.c
* app/layer_cmds.c
* app/misc_cmds.c
* app/parasite_cmds.c
* app/patterns_cmds.c
* app/procedural_db_cmds.c
* app/text_tool_cmds.c
* app/internal_procs.c: pdbge...