My unreviewed patches

[Tobias Schlüter]

2005/02/07 [gfortran] use string pool where appropriate
http://gcc.gnu.org/ml/fortran/2005-02/msg00047.html

2005/02/07 Re: [gfortran] Minor cleanup to trans-intrinsic.c
http://gcc.gnu.org/ml/fortran/2005-02/msg00048.html

2005/02/08 [gfortran] Move operator fields of gfc_expr into union
http://gcc.gnu.org/ml/fortran/2005-02/msg00064.html

2005/02/12 [gfortran] Fix excess errors with missing implicit types
http://gcc.gnu.org/ml/fortran/2005-02/msg00083.html
(Steven commented on this)

2005/02/13 [gfortran] Don't always inherit implicit types from surrounding
namespace
http://gcc.gnu.org/ml/fortran/2005-02/msg00096.html
(bugfix)