env: add manually /usr/local/bin to the PATH, seems like on some setup, its not included by default.
make cython check optional
fix DEBUG -> ifndef. condition was inverted ?!!!!
force setting to not strip the product on installation (STRIP_INSTALLED_PRODUCT = NO)
ios bootstrap: if we dont detect xcode environment, fake stdout/stderr to not crash on print, Logger, and anything that could use sys.stdout/err.
avoid listing non-existing path in PATH.
use stable kivy branch by default