openjade-native: Handle arbitrary directory names

Fix to not convert ".a"-s in LT_LIBS directory names to ".la"-s.
Open-webOS-DCO-1.0-Signed-off-by: Kwangrim Ahn <kwangrim.ahn@lge.com>

Change-Id: I319b0fc6a6349324d5e9bb75e1e8aff89d7c1087
Reviewed-on: https://g2g.palm.com/1790
Reviewed-by: Build Verification
Reviewed-by: Martin Jansa <martin.jansa@palm.com>
Reviewed-by: Susan Montooth <susan.montooth@lge.com>
Reviewed-by: Kwangrim Ahn <kwangrim.ahn@lge.com>
Tested-by: Kwangrim Ahn <kwangrim.ahn@lge.com>