Add a new "ini" command

This allows you to read ini-formatted data from anywhere and then
import one of the sections into the environment

This is based on rev 16 at http://code.google.com/p/inih/

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/common/Makefile b/common/Makefile
index 125b2be..92e06de 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -107,6 +107,7 @@
 COBJS-$(CONFIG_CMD_I2C) += cmd_i2c.o
 COBJS-$(CONFIG_CMD_IDE) += cmd_ide.o
 COBJS-$(CONFIG_CMD_IMMAP) += cmd_immap.o
+COBJS-$(CONFIG_CMD_INI) += cmd_ini.o
 COBJS-$(CONFIG_CMD_IRQ) += cmd_irq.o
 COBJS-$(CONFIG_CMD_ITEST) += cmd_itest.o
 COBJS-$(CONFIG_CMD_JFFS2) += cmd_jffs2.o