Fixed zpp (again)
zpp requires 'char **' and 'int *' for string (s) format
Don't use TSRMLS_CC for zend_copy_string()
Cleaned up the cast logic
Fixed ZTS build

Ref: issue #13
fix sizes, apparently
Merge https://github.com/krakjoe/ustring

Conflicts:
	api.h
	backend/api.h
	backend/icu.cpp
	ustring.cpp
fix header and TS