Note some variables defined in ${OPSYS}.mk.
Bump scmgit version 1.8.1.5 to 1.8.2
Following packages are on this updates.
  devel/scmgit
  devel/scmgit-base
  devel/scmgit-docs
  devel/scmgit-gitk
  www/gitweb     (nothing touched directly, but thanks gdt@)

The release note for this version and its size are:
wc devel/scmgit-base/work/git-1.8.2/RelNotes
     495    3520   22140 devel/scmgit-base/work/git-1.8.2/RelNotes

Files touched:
-- devel/scmgit
     Makefile.version (GIT_VERSION 1.8.1.5 -> 1.8.2)
-- devel/scmgit-base
     distinfo
     patches/patch-aa	(part is moved to config.mak.uname)
     patches/patch-config.mak.uname  (split from patch-aa)
     PLIST
-- devel/scmgit-docs
     PLIST
	Added installation of http 2.7.10 package to get xml2rfc.tcl
	to work. This will install http/http.tcl and http/pkgIndex.tcl
	to the tcl8.5/http/ directory.
Updated scmgit to 1.8.2 (scmgit-base, scmgit-gitk, scmgit, scmgit-docs, gitweb have been indirectly updated).