add PathAnalysis.cc and PathAnno.cc.
PathAnalysis.cc is the main code of path analysis.
PathAnno.cc will Annotate the entry and end.

Signed-off-by: xqx12 <xiaoqixue_1@163.com>
add read entry from a xml file ,

Signed-off-by: xqx12 <xiaoqixue_1@163.com>
update PathAnno.cc to get the instruction location in c code.

Signed-off-by: xqx12 <xiaoqixue_1@163.com>