Merge branch 'master' into gl

Merge branch 'master' into gl

- moved the uncolorize action to the color toolbar, renamed to uncolor

- use the keyword 'not' in place of the exclamation mark for operator!, this is clearer. also converted uses of '== false' to this.

- renamed some cmake identifiers

- now compiles with clang

- doubled buffer sizes in updaterevision to prevent GIT_HASH from being truncated

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mercurial