add new files in meson + add a small comment in documentation

Author: Xavier Caruso

src/sage/modules/free_module.py

@@ -3171,7 +3171,8 @@ def pseudohom(self, f, twist, codomain=None, side="left"):
 
         - ``twist`` -- the twisting morphism or the twisting derivation
           (if a derivation is given, the corresponding morphism `\theta`
-          is automatically infered)
+          is automatically infered;
+          see also :class:`sage.rings.polynomial.ore_polynomial_ring.OrePolynomialRing`)
 
         - ``codomain`` -- (default: ``None``) the codomain of the pseudo
           morphisms; if ``None``, the codomain is the same than the domain

src/sage/modules/meson.build

@@ -10,6 +10,8 @@ py.install_sources(
   'free_module_homspace.py',
   'free_module_integer.py',
   'free_module_morphism.py',
+  'free_module_pseudohomspace.py',
+  'free_module_pseudomorphism.py',
   'free_quadratic_module.py',
   'free_quadratic_module_integer_symmetric.py',
   'matrix_morphism.py',