* doc/sourcebuild.texi: Add comma for clarity.
	* doc/extend.texi: Fix some typos.
	* doc/passes.texi: Likewise.
	* doc/cppinternals.texi: Likewise.
	* doc/c-tree.texi: Likewise.
	* doc/tree-ssa.texi: Likewise.

From-SVN: r121241