table: add a simple text table renderer

This should help clean up some of the uglier status outputs.

Supports:

 * multi-line table cells
 * character fills
 * sparse tables
 * insert, delete by row and column
 * vertical separators

and not much else.

Signed-off-by: Zygo Blaxell <bees@furryterror.org>

lib/Makefile

@@ -17,6 +17,7 @@ CRUCIBLE_OBJS = \
 	path.o \
 	process.o \
 	string.o \
+	table.o \
 	task.o \
 	time.o \
 	uname.o \