* Fix ASAN build errors
This fixes https://github.com/apple/foundationdb/issues/10813
There are multiple problems:
- The boost 1.78 doesn't work well with ASAN build, which was fixed in later versions
- The compiling missed "context-impl=ucontext" flag for b2 command
- missing /usr/local/include/c++/v1/__config_site in the developer environment
* Use B2_ADDTTIONAL_BUILD_ARGS instead