Remove do-install target and let WRKSRC/Makefile do the job
Remove USE_GMAKE
Submitted by: KATO Tsuguru <tkato@prontomail.ne.jp>
Approved by: maintainer
Obtained from: ports@FreeBSD.ORG (the mail is one replyed for PR: 16866)
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.