Negative positions were not being adjusted by the dialog size correctly.
Fixed problem with negative positions and 'large fonts'.
File/DirRequests now the correct size (size of browse button was not being taken into account correctly).
Removed tabstops from statics.
git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@981 212acab6-be3b-0410-9dea-997c60f758d6