move v.v to cmd/v

.gitignore

@@ -7,20 +7,20 @@ fns.txt
 /v.c
 /v.*.c
 /v.c.out
-/tools/performance_compare
-/tools/oldv
-/tools/vrepl
-/tools/vtest
-/tools/vtest-compiler
-/tools/vtest-fmt
-/tools/vfmt
-/tools/vbin2v
-/tools/vup
-/tools/vpm
-/tools/vcreate
-/tools/vbuild-examples
-/tools/vbuild-tools
-/tools/vbuild-vbinaries
+/cmd/tools/performance_compare
+/cmd/tools/oldv
+/cmd/tools/vrepl
+/cmd/tools/vtest
+/cmd/tools/vtest-compiler
+/cmd/tools/vtest-fmt
+/cmd/tools/vfmt
+/cmd/tools/vbin2v
+/cmd/tools/vup
+/cmd/tools/vpm
+/cmd/tools/vcreate
+/cmd/tools/vbuild-examples
+/cmd/tools/vbuild-tools
+/cmd/tools/vbuild-vbinaries
 /v_g
 /v_cg
 /v_prod