CacheProvider 支持基础cache功能
Merge pull request #1 from TimGuan/master

add CacheProvider
add .settings to ignore file
modify ignore

revert jre7 to jre6
Merge branch 'master' of https://github.com/pocrd/net.pocrd.core
Conflicts:
	src/net/pocrd/util/BytecodeUtil.java
	src/net/pocrd/util/CacheProvider.java
	src/net/pocrd/util/LocalVarTable.java
	src/net/pocrd/util/StringHelper.java