Log Message:
Update to 2.11:

* Noteworthy changes in release 2.11 (2011-11-25) [stable]
- qa: Now builds without compiler warnings with Solaris CC.
- qa: Added clang analysis.  Fixed cyclomatic complexity output.
- tests: Added self-test of bit string functions.
- build: Added windows/libtasn14win.mk rules to produce Windows binaries.
- build: Don't hard code path to perl in doc/gdoc.
- Various minor fixes.