Support of pipe of single sourcefile

[paul-hammant]

I've read #465 and this is different, but still about pipes, though.

Give a concise description of what you want cloc to be able to do.

cat My.java | sed '/\w*}\w*/d' | cloc --src-file-from-pip

In this situation I'm trying to make a claim to readers that only have so many consequential lines of code. The source is in the end-of-line-bracing style and I don't care to count } on a line on their own. Sed can remove those for me (the source would not longer compile) and it'd be great if cloc could still do the stats. Workaround is to make a temp file.

[AlDanial]

Rather than supporting source code piped into cloc, my plan is to implement "ignore" filters such as requested in #862 . I'll keep this open until I implement that.