consolidated Makefile, adapted to dynlib approach
consolidated Makefile, adapted to dynlib approach

lgeek/koreader,Frenzie/koreader,frankyifei/koreader,chihyang/koreader,houqp/koreader,apletnev/koreader,ashang/koreader,NiLuJe/koreader,pazos/koreader,chrox/koreader,koreader/koreader,mihailim/koreader,koreader/koreader,Markismus/koreader,poire-z/koreader,Frenzie/koreader,mwoz123/koreader,ashhher3/koreader,NiLuJe/koreader,noname007/koreader,NickSavage/koreader,Hzj-jie/koreader,robert00s/koreader,poire-z/koreader