(svn r1898) Remove some unused macros from macros.h and move some others to more appropriate headers

(svn r1897) - Fix: [ 1120424 ] Set name overwrites same name. Renamings because your name is in use are virtual though so if name "b" is in use your name will become "b #1", renaming yourself again to "b" will become "b #2", and will toggle between these two.

(svn r1896) - Fix: remove Translated by hack since it's not used

(svn r1895) - Fix: add assert for charwidth getter just in case

(svn r1894) - Codechange: cleaned up the console a bit, wholly unified handling of text with that of editboxes
- Codechange: Introduction of Textbuf struct which not only holds physical data as length but also pixel-constrains (width) and information about the caret
- Codechange: Move Clipboard function to OS specific file. Currently only Windows has clipboard actions
- Feature: Editboxes, console and exit screen also accept the numeric-enter as a yes
- Feature: Navigation through text with cursor keys is possible, as well as arbitrary insertion (also paste) and deletion; both backspace and del keys. Functions DeleteTextBufferChar, InsertTextBufferChar and InsertTextBufferClipboard handle input and deletion. Navigation is done through MoveTextBufferPos.
- Fix: OTTD crash when opening 'add server' editbox
- CodeChange: fix up some stringwidth calculations in gfx.c. You can get the width in pixels of a character by calling GetCharacterWidth().

(svn r1893) If -i was specified respect it

(svn r1892) -Fix: [ 1117730 ] Production values of temperate-climate banks can now be altered

(svn r1891) -Fix: [ 1143587 ] carriages of newgrfs can be refitted again

(svn r1890) Begin to clean up the edit box: Remove one global variable and split the combined edit/original buffer into two

(svn r1889) -Fix: [ 1108637 ] 'Play scenario' now loads game options and difficulty, 'Load game' starts game with user-selected values.