Minor tidying of a few Xming patches and manuals following a code review and website revalidation.If spaces are part of the 'Password' the plink command line -pw output created by XLaunch is now quoted.Allow backslashes in the 'Login as User' field in XLaunch (as in domainname\\username).Trivially fix the cursor not appearing at server start mentioned in 7.3.0.24's change notes below (some updates to 'xfixes/cursor.c' were ignored, until now).
Fix a possible crash in both Xming's 'plink.exe's (see change note in 7.3.0.26 portable PuTTY).
A black background root window is now standard (option -br) use the new option -retro to revert.