Sourcery CodeBench manpages are installed under
share/doc/<target-triplet>/man/. Add symlinks so that the manpages
become available to "man".
NOTE: I use symlinks instead of moving the manpages, because I think
it is best to do as little as possible to prebuilt packages.
Sourcery CodeBench toolchains are prebuilt GCC toolchains from Mentor
Graphics.
Start out by adding ARM EABI and ARM GNU/Linux toolchains. Sourcery
CodeBench is also available for MIPS, Power, SuperH, ColdFire (and
more), so it should be easy to add later, if needed.
AFAIK, the EABI toolchains use newlib and the GNU/Linux ones use glibc.