build: allow use of openjdk and other versions of make

ifeq (0,$(shell expr $$(echo $(MAKE_VERSION) | sed "s/[^0-9\.].*//") = 3.82))

$(warning ********************************************************************************)

$(warning *  You are using version $(MAKE_VERSION) of make.)

$(warning *  Android can only be built by versions 3.81 and 3.82.)

$(warning *  Android is tested to build with versions 3.81 and 3.82.)

$(warning *  see https://source.android.com/source/download.html)

$(warning ********************************************************************************)

$(error stopping)

endif

endif

endif

endif

ifeq ($(strip $(java_version)),)

$(info ************************************************************)

$(info You are attempting to build with the incorrect version)

$(info You are attempting to build with an unsupported version)

$(info of java.)

$(info $(space))

$(info Your version is: $(shell java -version 2>&1 | head -n 1).)

$(info Please follow the machine setup instructions at)

$(info $(space)$(space)$(space)$(space)https://source.android.com/source/download.html)

$(info ************************************************************)

$(error stop)

endif

# Check for the correct version of javac