Merge remote-tracking branch 'dscho/add-p' into add-p-g4w

Let's test this for a while.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

Documentation/config/add.txt

@@ -5,3 +5,8 @@ add.ignore-errors (deprecated)::
 	option of linkgit:git-add[1].  `add.ignore-errors` is deprecated,
 	as it does not follow the usual naming convention for configuration
 	variables.
+
+add.interactive.useBuiltin::
+	[EXPERIMENTAL] Set to `true` to use the experimental built-in
+	implementation of the interactive version of linkgit:git-add[1]
+	instead of the Perl script version. Is `false` by default.

Makefile

@@ -826,6 +826,8 @@ LIB_H := $(sort $(shell git ls-files '*.h' ':!t/' ':!Documentation/' 2>/dev/null
 	-name '*.h' -print))
 
 LIB_OBJS += abspath.o
+LIB_OBJS += add-interactive.o
+LIB_OBJS += add-patch.o
 LIB_OBJS += advice.o
 LIB_OBJS += alias.o
 LIB_OBJS += alloc.o