Merging changes of r15903. Copy all run_igb scripts and make them executable.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@15904 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Merging changes of r15905. Print chmod summary.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@15906 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Merging changes of r15907. Adding a fix for Ant loosing executable permission.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@15908 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Merging changes of r15909. Do not fail build if executable command is not found.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@15910 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Merge remote-tracking branch 'upstream'