Git 2.1.2

1. e1c1a32 Revert "prompt: clean up strbuf usage" by Jeff King · 12 years ago
2. 84d7273 prompt: fall back to terminal if askpass fails by Jeff King · 14 years ago
3. 31b49d9 prompt: clean up strbuf usage by Jeff King · 14 years ago
4. a509025 prompt: use git_terminal_prompt by Jeff King · 14 years ago
5. 1cb0134 refactor git_getpass into generic prompt function by Jeff King · 14 years ago
6. d3c58b8 move git_getpass to its own source file by Jeff King · 14 years ago