Build 10527
GIT-
Fix ld: warning: ignoring duplicate libraries: '-lm'
SVN handles and Git names are merged into one person.
Fix ld: warning: ignoring duplicate libraries: '-lm'
Use Xstrdup in osxbits.mm
Avoids ASan failures
Implement startwin_isopen
See commit b689f9974f32acfa6200ba354ee2e21aea10702d See commit b2e15923a6690653cd51255e839d081551817187 Or, see `git log -S startwin_isopen`
Remove 2D mode selection from editor startup window
See commit 495475a6057579e82a8536ca2cf3d73d9f08bf27