build: reset ALTERNATIVES field in Package/Default
authorYousong Zhou <yszhou4tech@gmail.com>
Wed, 3 May 2017 09:30:08 +0000 (17:30 +0800)
committerYousong Zhou <yszhou4tech@gmail.com>
Wed, 3 May 2017 09:40:46 +0000 (17:40 +0800)
Otherwise ipkg packages may wrongly take on alternatives specs of
another package sharing the same package Makefile

Fixes FS#753

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

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