[ruby-cvs:67550] sonots:r60369 (trunk): common.mk: add install-capi to make help

[sonots at ruby-lang.org]

sonots	2017-10-23 01:57:16 +0900 (Mon, 23 Oct 2017)

  New Revision: 60369

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=60369

  Log:
    common.mk: add install-capi to make help

  Modified files:
    trunk/common.mk