update git to 2.18.0

https://raw.githubusercontent.com/git/git/master/Documentation/RelNotes/2.18.0.txt

Tested successfully on amd64 and sparc64.

Regress suite passes except for t5570, but as there's almost always some
test not working correctly, this shouldn't block the update. I'm working
on it.

OK?

Index: Makefile
===================================================================
RCS file: /cvs/ports/devel/git/Makefile,v
retrieving revision 1.190
diff -u -p -r1.190 Makefile
--- Makefile 14 Jun 2018 17:43:47 -0000 1.190
+++ Makefile 28 Jun 2018 12:01:50 -0000
@@ -4,7 +4,7 @@ COMMENT-main = GIT - Tree History Storag
COMMENT-svn = GIT - subversion interoperability tools
COMMENT-x11 = GIT - graphical tools

-V = 2.17.1
+V = 2.18.0
DISTNAME = git-${V}
PKGNAME-main = ${DISTNAME}
PKGNAME-svn = git-svn-${V}
Index: distinfo
===================================================================
RCS file: /cvs/ports/devel/git/distinfo,v
retrieving revision 1.144
diff -u -p -r1.144 distinfo
--- distinfo 14 Jun 2018 17:43:47 -0000 1.144
+++ distinfo 28 Jun 2018 12:02:01 -0000
@@ -1,4 +1,4 @@
-SHA256 (git-2.17.1.tar.gz) = 7GRS8MjVwfO8zqvXBwuKil7qEdTioElVwTm1Bl/X0Jo=
-SHA256 (git-manpages-2.17.1.tar.gz) = lzIFPBphjSV2wXUdAknkNwL2MqVx+EURMxiCvrNgZ30=
-SIZE (git-2.17.1.tar.gz) = 7366760
-SIZE (git-manpages-2.17.1.tar.gz) = 682441
+SHA256 (git-2.18.0.tar.gz) = lPrywLAqeSCwtG9JYdjpytCOgUGGFBAomKVfmA+j5+Q=
+SHA256 (git-manpages-2.18.0.tar.gz) = bPOKs61DzNzWpz/9zyoBbVara0skCldLC7lvUgoE/1U=
+SIZE (git-2.18.0.tar.gz) = 7498807
+SIZE (git-manpages-2.18.0.tar.gz) = 692379
Index: pkg/PLIST-main
===================================================================
RCS file: /cvs/ports/devel/git/pkg/PLIST-main,v
retrieving revision 1.82
diff -u -p -r1.82 PLIST-main
--- pkg/PLIST-main 14 Jun 2018 17:43:48 -0000 1.82
+++ pkg/PLIST-main 28 Jun 2018 12:11:06 -0000
@@ -37,6 +37,7 @@ libexec/git/git-bisect
@bin libexec/git/git-clone
@bin libexec/git/git-column
@bin libexec/git/git-commit
+@bin libexec/git/git-commit-graph
@bin libexec/git/git-commit-tree
@bin libexec/git/git-config
@bin libexec/git/git-count-objects
@@ -141,6 +142,7 @@ libexec/git/git-request-pull
@bin libexec/git/git-rm
libexec/git/git-send-email
@bin libexec/git/git-send-pack
+@bin libexec/git/git-serve
libexec/git/git-sh-i18n
@bin libexec/git/git-sh-i18n--envsubst
libexec/git/git-sh-setup
@@ -184,6 +186,7 @@ libexec/git/mergetools/diffuse
libexec/git/mergetools/ecmerge
libexec/git/mergetools/emerge
libexec/git/mergetools/examdiff
+libexec/git/mergetools/guiffy
libexec/git/mergetools/gvimdiff
libexec/git/mergetools/gvimdiff2
libexec/git/mergetools/gvimdiff3
@@ -221,6 +224,7 @@ libexec/git/mergetools/xxdiff
@man man/man1/git-clean.1
@man man/man1/git-clone.1
@man man/man1/git-column.1
+@man man/man1/git-commit-graph.1
@man man/man1/git-commit-tree.1
@man man/man1/git-commit.1
@man man/man1/git-config.1