Update emacs-snapshot to 24.0.50.20100808.

Major changes:
- calc/calc.el: Use `face' property to italicize headers.
- calc/calccomp.el (math-comp-highlight-string): Use
  `calc-highlight-selections-with-faces' to determine how to highlight
  sub-formulas.
- progmodes/sql.el (sql-mode-sqlite-font-lock-keywords): Added
  SQLite 3 keywords, functions and datatypes.
- net/tramp.el (tramp-handle-start-file-process ): Set connection
  property "vec".
- vc/diff-mode.el (diff-mode-shared-map): Bind g to revert-buffer.

(minskim)