Make it backward compatible with older quixote releases

* wcs/__init__.py:
 * wcs/admin/__init__.py:
 * wcs/backoffice/__init__.py:
 * wcs/forms/__init__.py:
 * wcs/qommon/__init__.py:
 * wcs/qommon/admin/__init__.py:
 * wcs/qommon/backoffice/__init__.py:
 * wcs/qommon/ident/__init__.py:
   if compile_package is not present, revert to previous way of doing
   (calling enable_ptl()).

wcs/__init__.py

@@ -2,8 +2,11 @@ import sys
 import os
 sys.path.insert(0, os.path.dirname(__file__))
 
-from quixote.ptl import compile_package
-compile_package(__path__)
+try:
+    from quixote.ptl import compile_package
+    compile_package(__path__)
+except ImportError:
+    pass
 
 import qommon
 

wcs/admin/__init__.py

@@ -1,4 +1,7 @@
-from quixote.ptl import compile_package
-compile_package(__path__)
+try:
+    from quixote.ptl import compile_package
+    compile_package(__path__)
+except ImportError:
+    pass
 
 from root import RootDirectory

wcs/backoffice/__init__.py

@@ -1,4 +1,7 @@
-from quixote.ptl import compile_package
-compile_package(__path__)
+try:
+    from quixote.ptl import compile_package
+    compile_package(__path__)
+except ImportError:
+    pass
 
 from root import RootDirectory

wcs/forms/__init__.py

@@ -1,2 +1,5 @@
-from quixote.ptl import compile_package
-compile_package(__path__)
+try:
+    from quixote.ptl import compile_package
+    compile_package(__path__)
+except ImportError:
+    pass

wcs/qommon/__init__.py

@@ -1,9 +1,12 @@
-from quixote.ptl import compile_package
-compile_package(__path__)
+from quixote import enable_ptl, get_publisher
+try:
+    from quixote.ptl import compile_package
+    compile_package(__path__)
+except ImportError:
+    enable_ptl()
 
 import __builtin__
 
-from quixote import enable_ptl, get_publisher
 
 from publisher import get_cfg, get_logger
 

wcs/qommon/admin/__init__.py

@@ -1,2 +1,5 @@
-from quixote.ptl import compile_package
-compile_package(__path__)
+try:
+    from quixote.ptl import compile_package
+    compile_package(__path__)
+except ImportError:
+    pass

wcs/qommon/backoffice/__init__.py

@@ -1,2 +1,5 @@
-from quixote.ptl import compile_package
-compile_package(__path__)
+try:
+    from quixote.ptl import compile_package
+    compile_package(__path__)
+except ImportError:
+    pass

wcs/qommon/ident/__init__.py

@@ -1,5 +1,8 @@
-from quixote.ptl import compile_package
-compile_package(__path__)
+try:
+    from quixote.ptl import compile_package
+    compile_package(__path__)
+except ImportError:
+    pass
 from quixote import get_publisher
 
 import base