Added !makensis command


git-svn-id: http://svn.code.sf.net/p/nsis/code/NSIS@6498 212acab6-be3b-0410-9dea-997c60f758d6
SafePPO should consider !makensis as unsafe (for now)


git-svn-id: http://svn.code.sf.net/p/nsis/code/NSIS@6499 212acab6-be3b-0410-9dea-997c60f758d6