Merge branch 'develop'

Merge branch 'develop'

Merge branch 'develop'

Merge branch 'develop'

Add, and update, documentation build targets.

Add, and update, documentation build targets.

Add, and update, documentation build targets.

Add, and update, documentation build targets.

Merge from develop for 1.59

- Fix compilation errors, missing dllexport and warnings on
  Windows and/or MSVC (Daniela Engert, Marcel Raad)

- Fix unintialized fields (Zoey Greer)

- Stop options with implicit value from consuming separate tokens (Michael John Decker)

- Make multitoken limit be max int, not 32K (Hans Hohenfeld)

- Code formatting and documentation fixes (Jurko, Lauri Nurmi)

- Minimal support for no-rtti build (Minmin Gong)

- Don't increment environment pointer past the end (Vladimir Prus)

Merge from develop for 1.59

- Fix compilation errors, missing dllexport and warnings on
  Windows and/or MSVC (Daniela Engert, Marcel Raad)

- Fix unintialized fields (Zoey Greer)

- Stop options with implicit value from consuming separate tokens (Michael John Decker)

- Make multitoken limit be max int, not 32K (Hans Hohenfeld)

- Code formatting and documentation fixes (Jurko, Lauri Nurmi)

- Minimal support for no-rtti build (Minmin Gong)

- Don't increment environment pointer past the end (Vladimir Prus)