Patch 7.0.070

Patch 7.0.070
Problem:    Compiler warnings for shadowed variables and uninitialized
           variables.
Solution:   Rename variables such as "index", "msg" and "dup".  Initialize
           variables.
Files:      src/edit.c, src/eval.c, src/ex_cmds.c, src/ex_cmds2.c,
           src/ex_docmd.c, src/gui_beval.c, src/gui_gtk.c, src/gui_gtk_x11.c,
           src/hardcopy.c, src/if_cscope.c, src/main.c, src/mbyte.c,
           src/memline.c, src/netbeans.c, src/normal.c, src/option.c,
           src/os_unix.c, src/quickfix.c, src/regexp.c, src/screen.c,
           src/search.c, src/spell.c, src/ui.c, src/undo.c, src/window.c,
           src/version.c

git-svn-id: https://vim.svn.sourceforge.net/svnroot/vim/vim7@82 2a77ed30-b011-0410-a7ad-c7884a0aa172