Qual: Uniformize code. Trigger PROJECT_BUILDDOC is removed because

building a doc is not a business event. For technical action after
creation of a pdf, hook "afterPDFCreation" must be used instead.

ChangeLog

@@ -87,6 +87,8 @@ Dolibarr better:
 - Changed the way parameters are provided to scripts sync_xxx_ldap2dolibarr.php
 - Some field into database wwere renamed from "libelle" to "label".
 - Table llx_c_pays were renamed into llx_c_country.  
+- Trigger PROJECT_BUILDDOC is removed. Building a doc is not a business event. For action after 
+  creation of a pdf, hook "afterPDFCreation" must be used instead.
 
 
 ***** ChangeLog for 3.6 compared to 3.5.* *****

htdocs/core/modules/project/modules_project.php

@@ -225,13 +225,6 @@ function project_pdf_create($db, $object, $modele, $outputlangs, $hidedetails=0,
 			// Success in building document. We build meta file.
 			dol_meta_create($object);
 
-			// Appel des triggers
-			include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-			$interface=new Interfaces($db);
-			$result=$interface->run_triggers('PROJECT_BUILDDOC',$object,$user,$langs,$conf);
-			if ($result < 0) { $error++; $this->errors=$interface->errors; }
-			// Fin appel triggers
-
 			return 1;
 		}
 		else

htdocs/core/modules/project/pdf/pdf_baleine.modules.php

@@ -295,6 +295,18 @@ function write_file($object,$outputlangs)
 				$pdf->Close();
 
 				$pdf->Output($file,'F');
+
+				// Add pdfgeneration hook
+				if (! is_object($hookmanager))
+				{
+					include_once DOL_DOCUMENT_ROOT.'/core/class/hookmanager.class.php';
+					$hookmanager=new HookManager($this->db);
+				}
+				$hookmanager->initHooks(array('pdfgeneration'));
+				$parameters=array('file'=>$file,'object'=>$object,'outputlangs'=>$outputlangs);
+				global $action;
+				$reshook=$hookmanager->executeHooks('afterPDFCreation',$parameters,$this,$action);    // Note that $action and $object may have been modified by some hooks
+
 				if (! empty($conf->global->MAIN_UMASK))
 				@chmod($file, octdec($conf->global->MAIN_UMASK));