some compiler warnings

[Angus Leeming]

For what it's worth, I get the following warnings when compiling current CVS.
Angus

cxx: Info: ../../../src/lyxparagraph.h, line 694: #479-D function
          "LyXParagraph::size" redeclared "inline" after being called
LyXParagraph::size_type LyXParagraph::size() const

cxx: Info: ../../../src/lyxparagraph.h, line 736: #479-D function
          "LyXParagraph::GetLayout" redeclared "inline" after being called
LyXTextClass::size_type LyXParagraph::GetLayout() const