Run Minetest update checker on startup (#7629)

This feature is enabled by default for non-Android release builds. Package
maintainers may use -DENABLE_UPDATE_CHECKER=0 to disable it.

Co-authored-by: rubenwardy <rw@rubenwardy.com>
Co-authored-by: sfan5 <sfan5@live.de>

android/build.gradle

@@ -5,6 +5,7 @@ project.ext.set("versionMinor", 6)      // Version Minor
 project.ext.set("versionPatch", 0)      // Version Patch
 project.ext.set("versionExtra", "-dev") // Version Extra
 project.ext.set("versionCode", 38)      // Android Version Code
+project.ext.set("developmentBuild", 1) // Whether it is a development build, or a release
 // NOTE: +2 after each release!
 // +1 for ARM and +1 for ARM64 APK's, because
 // each APK must have a larger `versionCode` than the previous

android/native/build.gradle

@@ -14,7 +14,8 @@ android {
 						"versionMajor=${versionMajor}",
 						"versionMinor=${versionMinor}",
 						"versionPatch=${versionPatch}",
-						"versionExtra=${versionExtra}"
+						"versionExtra=${versionExtra}",
+						"developmentBuild=${developmentBuild}"
 			}
 		}
 	}

android/native/jni/Android.mk

@@ -102,6 +102,7 @@ LOCAL_CFLAGS += \
 	-DVERSION_MINOR=${versionMinor} \
 	-DVERSION_PATCH=${versionPatch} \
 	-DVERSION_EXTRA=${versionExtra} \
+	-DDEVELOPMENT_BUILD=${developmentBuild} \
 	$(GPROF_DEF)
 
 ifdef USE_BUILTIN_LUA