Code cleanup: use bools instead of ints for tracking utility functions

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@60778 954f8c5b-7b00-dc11-b283-0030488c597c
Code cleanup: move hardcoded structure to a typedef

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@60779 954f8c5b-7b00-dc11-b283-0030488c597c
Get rid of Allow Fallback option

It was rather confusing from the user usage point
of view and didn't get so much improvement after
new bundle adjuster was added.

In the future we might want to switch resection
to PPnP algorithm, which could also might be a
nice alternative to fallback option.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@60780 954f8c5b-7b00-dc11-b283-0030488c597c
Code cleanup: move function prototype to header file

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@60781 954f8c5b-7b00-dc11-b283-0030488c597c