pentoo-installer: add multiple safety checks to detect if the unsquashfs fails

git-svn-id: http://pentoo.googlecode.com/svn@5871 04556701-5d27-2e10-b29c-201e0903c0fa
pentoo-installer: grep --color=never may just fix the installer, if not, we have a nice error catcher

git-svn-id: http://pentoo.googlecode.com/svn@5872 04556701-5d27-2e10-b29c-201e0903c0fa
pentoo-installer: more error handling, and slightly faster percentage grep

git-svn-id: http://pentoo.googlecode.com/svn@5873 04556701-5d27-2e10-b29c-201e0903c0fa
pentoo-installer: fix failcounter

git-svn-id: http://pentoo.googlecode.com/svn@5874 04556701-5d27-2e10-b29c-201e0903c0fa
pentoo-installer: just work, work or I'll kill you

git-svn-id: http://pentoo.googlecode.com/svn@5875 04556701-5d27-2e10-b29c-201e0903c0fa
pentoo-installer: leave a note for how to deal with further issues

git-svn-id: http://pentoo.googlecode.com/svn@5876 04556701-5d27-2e10-b29c-201e0903c0fa
pentoo-installer: fix a few broken msgboxes

git-svn-id: http://pentoo.googlecode.com/svn@5877 04556701-5d27-2e10-b29c-201e0903c0fa
pentoo-installer: ignore error, note the progress bar is frozen

git-svn-id: http://pentoo.googlecode.com/svn@5878 04556701-5d27-2e10-b29c-201e0903c0fa
pentoo-installer: spit out retcode on failure, fix isnumber check

git-svn-id: http://pentoo.googlecode.com/svn@5879 04556701-5d27-2e10-b29c-201e0903c0fa
pentoo-installer: ensure that unsquashfs is actually done and not just at 100%, we need the return code

git-svn-id: http://pentoo.googlecode.com/svn@5880 04556701-5d27-2e10-b29c-201e0903c0fa
pentoo-installer: add debug line in for troubleshooting

git-svn-id: http://pentoo.googlecode.com/svn@5881 04556701-5d27-2e10-b29c-201e0903c0fa