Code generators line buffer output

This results in slow performance on FUSE- and network-based filesystems, e.g., eCryptfs. std::ostream << std::endl emits a newline and flushes buffers to the kernel[1], yielding excessive system calls. Instead, emit "\n" which does the equivalent without the flush[2]. The attached patch accomplishes this while minimizing code churn by removing "using namespace std" and introducing a static variable endl.

[1] http://www.cplusplus.com/reference/ios/endl/
[2] http://stackoverflow.com/questions/5492380/what-is-the-c-iostream-endl-fiasco