wscript: move XASH_BUILD_COMMIT definition to libpublic, as this is the only place where it's used, for faster builds

public/wscript

@@ -12,8 +12,7 @@ def options(opt):
 	return
 
 def configure(conf):
-	# stub
-	return
+	conf.define('XASH_BUILD_COMMIT', conf.env.GIT_VERSION if conf.env.GIT_VERSION else 'notset')
 
 def build(bld):
 	bld(name = 'sdk_includes', export_includes = '. ../common ../pm_shared ../engine')

wscript

@@ -476,7 +476,6 @@ int main(void) { return !opus_custom_encoder_init(0, 0, 0); }'''
 			if conf.check_cc(msg='Checking if opus supports custom modes', defines='CUSTOM_MODES=1', use='opus', fragment=frag, mandatory=False):
 				conf.env.HAVE_SYSTEM_OPUS = True
 
-	conf.define('XASH_BUILD_COMMIT', conf.env.GIT_VERSION if conf.env.GIT_VERSION else 'notset')
 	conf.define('XASH_LOW_MEMORY', conf.options.LOW_MEMORY)
 
 	for i in SUBDIRS: