cppsp_standalone: don't use pthread_create when only 1 thread is needed
cpoll: MemoryPool::free() should call ::free(), not itself
cppsp: micro-optimizations
cppsp: move web server core to server.C and move cppsp_standalone to cppsp_server/
+ some misc changes
cppsp_standalone: fix double-destruct (calling a destructor twice)
cpoll: fix "narrowing conversion" warning on 64 bit
cppsp: fix compiler warnings on 64 bit
cppsp: removed obsolete global instance API
cppsp: re-worked socketd_cppsp
cppsp_standalone: update to new API