2014-05-03: Minor fixes

git-svn-id: svn://r-forge.r-project.org/svnroot/memisc@53 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
In memisc 0.96:
 2014-08-19:
  - modified some code that Prof Ripley thinks looks 'suspicious'.

 2014-06-24:
  - Change of SPSS variable names to lower case is now optional (but still the default).

git-svn-id: svn://r-forge.r-project.org/svnroot/memisc@54 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
2014-09-08: 'getSummary.glm' now takes care of missing values in weights of glm objects

git-svn-id: svn://r-forge.r-project.org/svnroot/memisc@55 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
2014-10-11: Adding missing exports from the namespace of the 'memisc' compatibility layer, reorganisation of namespace exports in 'mtable'

git-svn-id: svn://r-forge.r-project.org/svnroot/memisc@56 edb9625f-4e0d-4859-8d74-9fd3b1da38cb