Makefile
 - rename 2.10 to 2.10rc00
replace-commonbump
  1. Correct comment lines (typo, grammer etc)
  2. Add -a option to see all the packages
     ->  sub CheckAll()
  3. Rename sub CheckTopMakefile -> CheckPkgsrcTree
  4. In 'sub GenerateHash', skip logic are changed
  5. If .include  ".." line has ${VARIABLE}, assign the value