Colorize javac errors

You know those multi-line ones that are frequently interspersed with other buld output?
The ones that don't even have the word "error" in them to search for?

This makes them red.

ps2: fix jar_check failures cause by leaving empty stderr files in intermediates dirs
     this is probably not the best place to store stderr before colorizing it if javac
     exits non-zero, but it seems much lighter than mkdiring a bunch of temp directories
     or using sed to mangle the paths to point to per-intermediates directory unique
     temporary file names

Change-Id: I3b9b7d8a0c76958588ac1603b6742987d6dde54c
Signed-off-by: nuclearmistake <nuclearmistake@gmail.com>
releasetools: Add radio images to fastboot packages

Fastboot packages should include radio images, if they exist. Also
generate a flash-radio.sh file if a filesmap file exists to indicate
the partition that a radio image should be flashed to.

Change-Id: Ic3392cc76407408b98aad00f36f4dfa3b9be176b
releasetools: Add a newline for radio flashing scripts

When multiple radio images exist, make sure we put a newline at
the end of each flash command.

Change-Id: If113c88eb6dc90d2499f06c12e00494d7266a672
releasetools: Modify regex for radio files

The filesmap file may contain additional information (such as a
sha1 hash) after the parition name. We should still work in these
cases, but can ignore the additional data.

Change-Id: I0feaa5e94d48fa94b66b6c07e1946674fe703d85