Merge pull request #368 from haarg/devel

properly rename to build.log when old build.log doesn't exist
updated ::ParsePM with Parse::PMFile 0.18
Merge pull request #374 from charsbar/parse-pmfile-0.18

updated ::ParsePM with Parse::PMFile 0.18
synced with Parse::PMFile 0.19 to improve in-core version overload handling
Merge pull request #375 from charsbar/parse-pmfile-0.19

synced with Parse::PMFile 0.19 to improve in-core version overload handling
require perl 5.8
don't find directories when searching for executables