completion: complete --no-relative

Add --no-relative to __git_diff_common_options in the completion script,
and move --relative from __git_diff_difftool_options to
__git_diff_common_options since it applies to more than just diff and
difftool.

Signed-off-by: Philippe Blain <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: phil-blain

contrib/completion/git-completion.bash

@@ -1741,6 +1741,7 @@ __git_diff_common_options="--stat --numstat --shortstat --summary
 			--color-moved-ws= --no-color-moved-ws
 			--full-index --binary --abbrev --diff-filter=
 			--find-copies --find-object --find-renames
+			--no-relative --relative
 			--find-copies-harder --ignore-cr-at-eol
 			--text --ignore-space-at-eol --ignore-space-change
 			--ignore-all-space --ignore-blank-lines --exit-code
@@ -1762,7 +1763,7 @@ __git_diff_common_options="--stat --numstat --shortstat --summary
 
 # Options for diff/difftool
 __git_diff_difftool_options="--cached --staged --pickaxe-all --pickaxe-regex
-			--base --ours --theirs --no-index --relative --merge-base
+			--base --ours --theirs --no-index --merge-base
 			--ita-invisible-in-index --ita-visible-in-index
 			$__git_diff_common_options"